Information Disclosure
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
How It Works
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security. This happens through multiple channels: verbose error messages that display stack traces revealing internal paths and frameworks, improperly secured debug endpoints left active in production, and misconfigured servers that expose directory listings or version control artifacts like .git folders. APIs often leak excessive data in responses—returning full user objects when only a name is needed, or revealing system internals through metadata fields.
Attackers exploit these exposures systematically. They probe for common sensitive files (.env, config.php, backup archives), trigger error conditions to extract framework details, and analyze response timing or content differences to enumerate valid usernames or resources. Even subtle variations—like "invalid password" versus "user not found"—enable account enumeration. Exposed configuration files frequently contain database credentials, API keys, or internal service URLs that unlock further attack vectors.
The attack flow typically starts with passive reconnaissance: examining HTTP headers, JavaScript bundles, and public endpoints for version information and architecture clues. Active probing follows—testing predictable paths, manipulating parameters to trigger exceptions, and comparing responses across similar requests to identify information leakage patterns.
Impact
- Credential compromise: Exposed configuration files, hardcoded secrets in source code, or API keys enable direct authentication bypass
- Attack surface mapping: Stack traces, framework versions, and internal paths help attackers craft targeted exploits for known vulnerabilities
- Data breach: Direct exposure of user data, payment information, or proprietary business logic through oversharing APIs or accessible backups
- Privilege escalation pathway: Internal URLs, service discovery information, and architecture details facilitate lateral movement and SSRF attacks
- Compliance violations: GDPR, PCI-DSS, and HIPAA penalties for exposing regulated data through preventable disclosures
Real-World Examples
A major Git repository exposure affected thousands of websites when .git folders remained accessible on production servers, allowing attackers to reconstruct entire source code histories including deleted commits containing credentials. Tools like GitDumper automated mass exploitation of this misconfiguration.
Cloud storage misconfigurations have repeatedly exposed sensitive data when companies left S3 buckets or Azure Blob containers publicly readable. One incident exposed 150 million voter records because verbose API error messages revealed the storage URL structure, and no authentication was required.
Framework debug modes left enabled in production have caused numerous breaches. Django's DEBUG=True setting exposed complete stack traces with database queries and environment variables, while Laravel's debug pages revealed encryption keys through the APP_KEY variable in environment dumps.
Mitigation
- Generic error pages: Return uniform error messages to users; log detailed exceptions server-side only
- Disable debug modes: Enforce production configurations that suppress stack traces, verbose logging, and debug endpoints through deployment automation
- Access control audits: Restrict or remove development artifacts (
.git, backup files,phpinfo()) and internal endpoints before deployment - Response minimization: API responses should return only necessary fields; implement allowlists rather than blocklists for data exposure
- Security headers: Deploy
X-Content-Type-Options, remove server version banners, and disable directory indexing - Timing consistency: Ensure authentication and validation responses take uniform time regardless of input validity
Recent CVEs (69521)
Certain HP LaserJet, HP LaserJet Managed, HP PageWide, and HP PageWide Managed printers may be vulnerable to potential information disclosure. Rated medium severity (CVSS 4.6), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid on another origin, leading to possible user confusion and spoofing attacks. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
When delegating navigations to the operating system, Firefox would accept the `mk` scheme which might allow attackers to launch pages and execute scripts in Internet Explorer in unprivileged mode. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Mixed-content checks were unable to analyze opaque origins which led to some mixed content being loaded. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper input validation vulnerability in the Transaction Server CLUSTERPRO X 4.3 for Windows and earlier, EXPRESSCLUSTER X 4.3 for Windows and earlier, CLUSTERPRO X 4.3 SingleServerSafe for Windows. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Datalust Seq.App.EmailPlus (aka seq-app-htmlemail) 3.1.0-dev-00148, 3.1.0-dev-00170, and 3.1.0-dev-00176 can use cleartext SMTP on port 25 in some cases where encryption on port 465 was intended. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An issue was discovered in net/tipc/crypto.c in the Linux kernel before 5.14.16. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Inappropriate implementation in WebApp Installer in Google Chrome prior to 95.0.4638.54 allowed a remote attacker to potentially overlay and spoof the contents of the Omnibox (URL bar) via a crafted. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Out of bounds read in WebAudio in Google Chrome prior to 95.0.4638.54 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Race in V8 in Google Chrome prior to 95.0.4638.54 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Inappropriate implementation in WebView in Google Chrome on Android prior to 95.0.4638.54 allowed a remote attacker to leak cross-origin data via a crafted app. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Inappropriate implementation in Blink in Google Chrome prior to 95.0.4638.54 allowed a remote attacker to abuse content security policy via a crafted HTML page. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A unprotected storage of credentials in Fortinet FortiSIEM Windows Agent version 4.1.4 and below allows an authenticated user to disclosure agent password due to plaintext credential storage in log. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Hangfire is an open source system to perform background job processing in a .NET or .NET Core applications. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An improper validation of certificate with host mismatch [CWE-297] vulnerability in FortiOS versions 6.4.6 and below may allow the connection to a malicious LDAP server via options in GUI, leading to. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A concurrent execution using shared resource with improper Synchronization vulnerability ('Race Condition') in the customer database interface of FortiPortal before 6.0.6 may allow an authenticated,. Rated low severity (CVSS 3.1), this vulnerability is remotely exploitable. No vendor patch available.
An improper access control vulnerability [CWE-284] in FortiManager versions 6.4.4 and 6.4.5 may allow an authenticated attacker with a restricted user profile to modify the VPN tunnel status of other. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
IBM InfoSphere Information Server 11.7 could allow an attacker to obtain sensitive information due to a insecure third party domain access vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
IBM InfoSphere Data Flow Designer Engine (IBM InfoSphere Information Server 11.7 ) component has improper validation of the REST API server certificate. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
In Siren Investigate before 11.1.4, when enabling the cluster feature of the Siren Alert application, TLS verifications are disabled globally in the Siren Investigate main process. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Sonatype Nexus Repository Manager 3.x through 3.35.0 allows attackers to access the SSL Certificates Loading function via a low-privileged account. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows local low-privileged users to achieve an arbitrary read or write operation from/to physical memory. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows local low-privileged users to achieve unauthorized access to USB device privileged IN and OUT instructions. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
RtsUpx.sys in Realtek RtsUpx USB Utility Driver for Camera/Hub/Audio through 1.14.0.0 allows local low-privileged users to achieve unauthorized access to USB devices (Escalation of Privileges, Denial. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Couchbase Server before 6.6.3 and 7.x before 7.0.2 stores Sensitive Information in Cleartext. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
metakv in Couchbase Server 7.0.0 uses Cleartext for Storage of Sensitive Information. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Whale browser for iOS before 1.14.0 has an inconsistent user interface issue that allows an attacker to obfuscate the address bar which may lead to address bar spoofing. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The OptinMonster WordPress plugin is vulnerable to sensitive information disclosure and unauthorized setting updates due to insufficient authorization validation via the logged_in_or_has_api_key. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
HP Print and Scan Doctor, an application within the HP Smart App for Windows, is potentially vulnerable to local elevation of privilege. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
System Manager 9.x versions 9.7 and higher prior to 9.7P16, 9.8P7 and 9.9.1P2 are susceptible to a vulnerability which could allow a local attacker to discover plaintext iSCSI CHAP credentials. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A XML External Entity (XXE) vulnerability was discovered in symphony\lib\toolkit\class.xmlelement.php in Symphony 2.7.10 which can lead to an information disclosure or denial of service (DOS). Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where a string provided by the guest OS may not be properly null terminated. Rated high severity (CVSS 7.0). No vendor patch available.
NVIDIA vGPU software contains a vulnerability in the Virtual GPU Manager (vGPU plugin), where there is the potential to execute privileged operations by the guest OS, which may lead to information. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
On Windows, the uninstaller binary copies itself to a fixed temporary location, which is then executed (the originally called uninstaller exits, so it does not block the installation directory). Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system command. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
An out-of-bounds read was addressed with improved input validation. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An out-of-bounds read was addressed with improved input validation. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A permissions issue was addressed with improved validation. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The issue was addressed with improved permissions logic. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
This issue was addressed with improved checks. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
In Spring Framework versions 5.3.0 - 5.3.10, 5.2.0 - 5.2.17, and older unsupported versions, it is possible for a user to provide malicious input to cause the insertion of additional log entries. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In Spring Data REST versions 3.4.0 - 3.4.13, 3.5.0 - 3.5.5, and older unsupported versions, HTTP resources implemented by custom controllers using a configured base API path and a controller. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In Spring Cloud OpenFeign 3.0.0 to 3.0.4, 2.2.0.RELEASE to 2.2.9.RELEASE, and older unsupported versions, applications using type-level `@RequestMapping`annotations over Feign client interfaces, can. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In M-Files Web product with versions before 20.10.9524.1 and 20.10.9445.0, a remote attacker could use a flaw to obtain unauthenticated access to 3rd party component license key information on server. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Register tampering vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may allow the register value to be modified. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Improper verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may allow attempts to read an array that is out of bounds. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Low memory error in Huawei Smartphone due to the unlimited size of images to be parsed.Successful exploitation of this vulnerability may cause the Gallery or Files app to exit unexpectedly. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Improper verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause transmission of certain virtual information. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a issue that trustlist strings being repeatedly inserted into the linked list in Huawei Smartphone due to race conditions. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
There is a Memory leaks vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service availability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Public key verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service confidentiality. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Parameter verification issue in Huawei Smartphone.Successful exploitation of this vulnerability can affect service integrity. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a issue that nodes in the linked list being freed for multiple times in Huawei Smartphone due to race conditions. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
There is an Input verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service availability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Out-of-bounds read vulnerability in Huawei Smartphone. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a issue of Unstandardized field names in Huawei Smartphone. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a SSID vulnerability with Wi-Fi network connections in Huawei devices.Successful exploitation of this vulnerability may affect service confidentiality. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a issue of IP address spoofing in Huawei Smartphone. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Uninitialized variable vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause transmission of invalid data. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Verification errors vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service confidentiality. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Out-of-bounds memory access in Huawei Smartphone.Successful exploitation of this vulnerability may cause process exceptions. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Improper verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may affect service confidentiality. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Privileges Controls vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Out-of-bounds Read vulnerability. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Exposure of Sensitive Information to an Unauthorized Actor vulnerability. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Improper Input Validation vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Out-of-bounds Read vulnerability. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Use After Free vulnerability . Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Data Processing Errors vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a External Control of System or Configuration Setting vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Improper Input Validation vulnerability. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Improper Input Validation vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A component of the HarmonyOS has a Incomplete Cleanup vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
There is a Configuration defects in Huawei Smartphone.Successful exploitation of this vulnerability may affect service confidentiality. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is an Uncaught Exception vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability will cause the app to exit unexpectedly. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Configuration defects in Huawei Smartphone.Successful exploitation of this vulnerability may affect service availability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a vulnerability of hijacking unverified providers in Huawei Smartphone.Successful exploitation of this vulnerability may allow attackers to hijack the device and forge UIs to induce users to. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a DoS vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause DoS attacks. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
There is a Remote DoS vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability can affect service integrity. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A certificate validation vulnerability in PCM600 Update Manager allows attacker to get unwanted software packages to be installed on computer which has PCM600 installed. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
An issue was discovered on the Grandstream HT801 Analog Telephone Adaptor before 1.0.29.8. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
Roblox-Purchasing-Hub is an open source Roblox product purchasing hub. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
A vulnerability in Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to overwrite or append arbitrary data to system files using root-level privileges. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.
Multiple vulnerabilities in the CLI of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, local attacker to execute arbitrary commands with root privileges. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.