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 (68986)
IOBit IOTransfer V4 is vulnerable to Unquoted Service Path. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Wire through 3.22.3993 on Windows advertises deletion of sent messages; nonetheless, all messages can be retrieved (for a limited period of time) from the. Rated medium severity (CVSS 4.7). Public exploit code available and no vendor patch available.
drachtio-server 0.8.18 has a request-handler.cpp event_cb use-after-free for any request. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
In drachtio-server 0.8.18, /var/log/drachtio has mode 0777 and drachtio.log has mode 0666. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. Public exploit code available.
Karmasis Informatics Infraskope SIEM+ has an unauthenticated access vulnerability which could allow an unauthenticated attacker to obtain critical information. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Mediatrix 4102 before v48.5.2718 allows local attackers to gain root access via the UART port. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
D-Link - G integrated Access Device4 Information Disclosure & Authorization Bypass. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
mDNSResponder.exe is vulnerable to DLL Sideloading attack. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
OPC Foundation Local Discovery Server (LDS) through 1.04.403.478 uses a hard-coded file path to a configuration file. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Incorrect Permission Assignment vulnerability could allow attackers to access resources due to misconfigured permissions.
Lightning Network Daemon (lnd) is an implementation of a lightning bitcoin overlay network node. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in syngo Dynamics (All versions < VA40G HF01). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
IBM UrbanCode Deploy (UCD) 6.2.7.0 through 6.2.7.17, 7.0.0.0 through 7.0.5.12, 7.1.0.0 through 7.1.2.8, and 7.2.0.0 through 7.2.3.1 could allow a user with administrative privileges including "Manage. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. This Insufficiently Protected Credentials vulnerability could allow attackers to obtain user credentials due to weak protection mechanisms.
Affected versions of Atlassian Crowd allow an attacker to authenticate as the crowd application via security misconfiguration and subsequent ability to call privileged endpoints in Crowd's REST API. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An issue was discovered in BACKCLICK Professional 5.9.63. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in BACKCLICK Professional 5.9.63. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
FreeRDP is a free remote desktop protocol library and clients. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
FreeRDP is a free remote desktop protocol library and clients. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Zulip is an open-source team collaboration tool. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
FreeRDP is a free remote desktop protocol library and clients. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
FreeRDP is a free remote desktop protocol library and clients. Rated medium severity (CVSS 5.7), this vulnerability is remotely exploitable, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
IBM Sterling Partner Engagement Manager 2.0 allows encrypted storage of client data to be stored locally which can be read by another user on the system. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity.
A vulnerability was found in Simple History Plugin. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Improper Restriction of Excessive Authentication Attempts in GitHub repository mastodon/mastodon prior to 4.0.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
OpenSearch is a community-driven, open source fork of Elasticsearch and Kibana. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
OpenSearch is a community-driven, open source fork of Elasticsearch and Kibana. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity.
Session fixation exists in ZoneMinder through 1.36.12 as an attacker can poison a session cookie to the next logged-in user. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Incorrect pointer checks within the NvmExpressDxe driver can allow tampering with SMRAM and OS memory Incorrect pointer checks within the NvmExpressDxe driver can allow tampering with SMRAM and OS. Rated high severity (CVSS 8.2), this vulnerability is low attack complexity. No vendor patch available.
IBM Cloud Pak for Security (CP4S) 1.10.0.0 through 1.10.2.0 could allow an authenticated user to obtain highly sensitive information or perform unauthorized actions due to improper input validation. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity.
A vulnerability in the management web server of Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker with high privileges to execute configuration commands on. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to access sensitive information. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the TLS handler of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to gain access to sensitive information. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the module import function of the administrative interface of Cisco Firepower Management Center (FMC) Software could allow an authenticated, remote attacker to view sensitive. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Jenkins NS-ND Integration Performance Publisher Plugin 4.8.0.143 and earlier stores passwords unencrypted in job config.xml files on the Jenkins controller where they can be viewed by attackers with. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Jenkins NS-ND Integration Performance Publisher Plugin 4.8.0.143 and earlier globally and unconditionally disables SSL/TLS certificate and hostname validation for the entire Jenkins controller JVM. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Jenkins Reverse Proxy Auth Plugin 1.7.3 and earlier stores the LDAP manager password unencrypted in the global config.xml file on the Jenkins controller where it can be viewed by attackers with. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Jenkins Script Security Plugin 1189.vb_a_b_7c8fd5fde and earlier stores whole-script approvals as the SHA-1 hash of the script, making it vulnerable to collision attacks. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Jenkins NS-ND Integration Performance Publisher Plugin 4.8.0.146 and earlier unconditionally disables SSL/TLS certificate and hostname validation for several features. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Information Exposure Through Log Files vulnerability discovered in Foundry when logs were captured using an underlying library known as Build2. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Users with write permissions to a repository can delete arbitrary directories. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
If anonymous read enabled, it's possible to read the database file directly without logging in. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In PHOENIX CONTACT Automationworx Software Suite up to version 1.89 memory can be read beyond the intended scope due to insufficient validation of input data. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Transient DOS due to buffer over-read in WLAN firmware while processing PPE threshold. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Transient DOS due to buffer over-read in WLAN firmware while parsing cipher suite info attributes. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Information disclosure in video due to buffer over-read while parsing avi files in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile,. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Cryptographic issues in WLAN during the group key handshake of the WPA/WPA2 protocol in Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Voice & Music. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Information disclosure in kernel due to improper handling of ICMP requests in Snapdragon Wired Infrastructure and Networking. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The Test LDAP Users functionality in Liferay Portal 7.0.0 through 7.4.3.4, and Liferay DXP 7.0 fix pack 102 and earlier, 7.1 before fix pack 27, 7.2 before fix pack 17, 7.3 before update 4, and DXP. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Certain Liferay products are affected by: Missing SSL Certificate Validation in the Dynamic Data Mapping module's REST data providers. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required.
The Tenda AC1200 Router model W15Ev2 V15.11.0.10(1576) is affected by a password exposure vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
DMA attacks on the parameter buffer used by the VariableRuntimeDxe software SMI handler could lead to a TOCTOU attack. Rated medium severity (CVSS 6.4). No vendor patch available.
DMA transactions which are targeted at input buffers used for the NvmExpressDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the SdMmcDevice software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the NvmExpressLegacy software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the HddPassword software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the SdHostDriver software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the FwBlockServiceSmm software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated medium severity (CVSS 6.4). No vendor patch available.
DMA transactions which are targeted at input buffers used for the AhciBusDxe software SMI handler could cause SMRAM corruption (a TOCTOU attack). Rated high severity (CVSS 7.0). No vendor patch available.
DMA transactions which are targeted at input buffers used for the SmmResourceCheckDxe software SMI handler cause SMRAM corruption (a TOCTOU attack) DMA transactions which are targeted at input. Rated medium severity (CVSS 6.4). No vendor patch available.
Update description and links DMA transactions which are targeted at input buffers used for the software SMI handler used by the FvbServicesRuntimeDxe driver could cause SMRAM corruption through a. Rated medium severity (CVSS 6.4). No vendor patch available.
DMA attacks on the parameter buffer used by the PnpSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack) DMA attacks on the. Rated medium severity (CVSS 6.4). No vendor patch available.
Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 inadvertently disclose server-side sensitive information (secrets in environment variables and server information) when. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Concrete CMS (formerly concrete5) below 8.5.10 and between 9.0.0 and 9.1.2 does not issue a new session ID upon successful OAuth authentication. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Aiphone GT-DMB-N 3-in-1 Video Entrance Station with NFC Reader 1.0.3 does not mitigate against repeated failed access attempts, which allows an attacker to gain administrative privileges. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
DMA transactions which are targeted at input buffers used for the StorageSecurityCommandDxe software SMI handler could cause SMRAM corruption through a TOCTOU attack. Rated high severity (CVSS 7.8). No vendor patch available.
DMA attacks on the parameter buffer used by the Int15ServiceSmm software SMI handler could lead to a TOCTOU attack on the SMI handler and lead to corruption of SMRAM. Rated medium severity (CVSS 6.4). No vendor patch available.
DMA transactions which are targeted at input buffers used for the software SMI handler used by the IdeBusDxe driver could cause SMRAM corruption through a TOCTOU attack... Rated medium severity (CVSS 6.4). No vendor patch available.
DMA attacks on the parameter buffer used by the IhisiSmm driver could change the contents after parameter values have been checked but before they are used (a TOCTOU attack). Rated medium severity (CVSS 6.4). No vendor patch available.
Discourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Insufficient Session Expiration in GitHub repository ikus060/rdiffweb prior to 2.5.0. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Discourse is the an open source discussion platform. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
The Zoom Client for Meetings (for Android, iOS, Linux, macOS, and Windows) before version 5.12.6 is susceptible to a local information exposure vulnerability. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
Information Exposure Through Log Files vulnerability discovered in Foundry Code-Workbooks where the endpoint backing that console was generating service log records of any Python code being run. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
IBM CICS TX 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
IBM CICS TX 11.1 does not neutralize or incorrectly neutralizes web scripting syntax in HTTP headers that can be used by web browser components that can process raw headers. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
IBM CICS TX 11.1 could disclose sensitive information to a local user due to insecure permission settings. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Improper Restriction of Excessive Authentication Attempts in GitHub repository kareadita/kavita prior to 0.6.0.3. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
IBM CICS TX 11.7 could allow an attacker to obtain sensitive information from HTTP response headers. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
IBM CICS TX 11.7 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
IBM CICS TX 11.1 does not set the secure attribute on authorization tokens or session cookies. Rated low severity (CVSS 3.1), this vulnerability is remotely exploitable, no authentication required. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
IBM CICS TX 11.1 allows web pages to be stored locally which can be read by another user on the system. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
IBM MQ Internet Pass-Thru 2.1, 9.2 LTS and 9.2 CD stores potentially sensitive information in trace files that could be read by a local user. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
A vulnerability in UI of Apache Airflow allows an attacker to view unmasked secrets in rendered template values for tasks which were not executed (for example when they were depending on past and. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Pillow before 9.2.0 performs Improper Handling of Highly Compressed GIF Data (Data Amplification). Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
A vulnerability was found in NagVis up to 1.9.33 and classified as problematic.php. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.
A vulnerability was found in LibTIFF. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.