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 (68916)
Cybereason EDR version 19.1.282 and above, 19.2.182 and above, 20.1.343 and above, and 20.2.X and above has a DLL hijacking vulnerability, which could allow a local attacker to execute code with. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
GPAC version 2.2-rev0-gab012bbfb-master was discovered to contain a memory leak in lsr_read_rare_full function. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
An issue was discovered in MediaWiki before 1.35.9, 1.36.x through 1.38.x before 1.38.5, and 1.39.x before 1.39.1. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
A vulnerability in Cisco CX Cloud Agent of could allow an authenticated, local attacker to elevate their privileges. Rated high severity (CVSS 7.3), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in Cisco CX Cloud Agent of could allow an authenticated, local attacker to elevate their privileges. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in the monitoring application of Cisco Industrial Network Director could allow an authenticated, local attacker to access a static secret key used to store both local data and. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability in the CLI of Cisco TelePresence CE and RoomOS Software could allow an authenticated, local attacker to overwrite arbitrary files on the local system of an affected device. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
Cloud Mobility for Dell EMC Storage, versions 1.3.0.X and below contains an Improper Check for Certificate Revocation vulnerability. Rated high severity (CVSS 7.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
IBM Robotic Process Automation 20.12.0 through 21.0.2 defaults to HTTP in some RPA commands when the prefix is not explicitly specified in the URL. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required.
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe Acrobat Reader versions 22.003.20282 (and earlier), 22.003.20281 (and earlier) and 20.005.30418 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe Dimension version 3.4.6 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity.
Shopware is an open source commerce platform based on Symfony Framework and Vue js. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Shopware is an open source commerce platform based on Symfony Framework and Vue js. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Shopware is an open source commerce platform based on Symfony Framework and Vue js. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Deno is a runtime for JavaScript and TypeScript that uses V8 and is built in Rust. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.
The Birthday attack against 64-bit block ciphers flaw (CVE-2016-2183) was reported for the health checks port (9979) on etcd grpc-proxy component. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Use of a Broken or Risky Cryptographic Algorithm in the function mbedtls_mpi_exp_mod() in lignum.c in Mbed TLS Mbed TLS all versions before 3.0.0, 2.27.0 or 2.16.11 allows attackers with access to. Rated medium severity (CVSS 4.7). No vendor patch available.
IBM QRadar SIEM 7.4 and 7.5copies certificate key files used for SSL/TLS in the QRadar web user interface to managed hosts in the deployment that do not require that key. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
CX-Motion-MCH v2.32 and earlier contains an access of uninitialized pointer vulnerability. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Hidden functionality vulnerability in PIX-RT100 versions RT100_TEQ_2.1.1_EQ101 and RT100_TEQ_2.1.2_EQ101 allows a network-adjacent attacker to access the product via undocumented Telnet or SSH. Rated medium severity (CVSS 6.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Trusted Firmware-A through 2.8 has an out-of-bounds read in the X.509 parser for parsing boot certificates. Rated high severity (CVSS 7.4), this vulnerability is remotely exploitable, no authentication required.
Weak Password Requirements in GitHub repository thorsten/phpmyfaq prior to 3.1.10. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Improper Input Validation in GitHub repository publify/publify prior to 9.2.10. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4 protocol can be used but not the safe SOCKS4a protocol, aka TROVE-2022-002. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Adobe InCopy versions 18.0 (and earlier), 17.4 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe InDesign version 18.0 (and earlier), 17.4 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
Adobe InDesign version 18.0 (and earlier), 17.4 (and earlier) are affected by an out-of-bounds read vulnerability that could lead to disclosure of sensitive memory. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
An Improper Handling of Unexpected Data Type vulnerability in the handling of SIP calls in Juniper Networks Junos OS on SRX Series and MX Series platforms allows an attacker to cause a memory leak. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
InHand Networks InRouter 302, prior to version IR302 V3.5.56, and InRouter 615, prior to version InRouter6XX-S-V2.3.0.r5542, contain vulnerability CWE-760: Use of a One-way Hash with a Predictable. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Uncontrolled Search Path Element in GitHub repository bits-and-blooms/bloom prior to 3.3.1. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
Insufficient Session Expiration in GitHub repository pyload/pyload prior to 0.5.0b3.dev36. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
ZITADEL is a combination of Auth0 and Keycloak. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required.
Insufficient input validation in the SMU may allow a physical attacker to exfiltrate SMU memory contents over the I2C bus potentially leading to a loss of confidentiality. Rated low severity (CVSS 2.4), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
The personnummer implementation before 3.0.3 for Dart mishandles numbers in which the last four digits match the ^000[0-9]$ regular expression. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Windows Kernel Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0). No vendor patch available.
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.
Windows Overlay Filter Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Overlay Filter Information Disclosure Vulnerability. Rated medium severity (CVSS 4.7). No vendor patch available.
Windows Print Spooler Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Microsoft Exchange Server Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Microsoft Exchange Server Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Microsoft Exchange Server Information Disclosure Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Windows Print Spooler Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Event Tracing for Windows Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows NTLM Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Microsoft Office Visio Information Disclosure Vulnerability. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Windows Bluetooth Driver Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0).
Microsoft Cryptographic Services Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Credential Manager User Interface Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Malicious Software Removal Tool Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.3). No vendor patch available.
Microsoft DWM Core Library Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Point-to-Point Protocol (PPP) Information Disclosure Vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Windows Win32k Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Print Spooler Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is low attack complexity. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Microsoft Cryptographic Services Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Cryptographic Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Windows Error Reporting Service Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows GDI Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Microsoft Cryptographic Services Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Cryptographic Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Windows Installer Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0). No vendor patch available.
Windows Task Scheduler Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Windows Cryptographic Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Windows Authentication Remote Code Execution Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.
Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Event Tracing for Windows Information Disclosure Vulnerability. Rated medium severity (CVSS 4.7). No vendor patch available.
Windows GDI Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0). No vendor patch available.
KubePi is a modern Kubernetes panel. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Insufficient policy enforcement in CORS in Google Chrome prior to 109.0.5414.74 allowed a remote attacker to leak cross-origin data via a crafted HTML page. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Inappropriate implementation in in Fullscreen API in Google Chrome on Android prior to 109.0.5414.74 allowed a remote attacker to execute incorrect security UI 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.
Inappropriate implementation in in Permission prompts in Google Chrome on Windows prior to 109.0.5414.74 allowed a remote attacker to force acceptance of a permission prompt 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.
Inappropriate implementation in in Fullscreen API in Google Chrome on Android prior to 109.0.5414.74 allowed a remote attacker to spoof the contents of the Omnibox (URL bar) 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.
In SAP Bank Account Management (Manage Banks) application, when a user clicks a smart link to navigate to another app, personal data is shown directly in the URL. Rated medium severity (CVSS 5.7), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
SAP NetWeaver ABAP Server and ABAP Platform - versions SAP_BASIS 700, 701, 702, 710, 711, 730, 731, 740, 750, 751, 752, 753, 754, 755, 756, 757, KERNEL 7.22, 7.53, 7.77, 7.81, 7.85, 7.89, KRNL64UC. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Zip4j through 2.11.2, as used in Threema and other products, does not always check the MAC when decrypting a ZIP archive. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.
A vulnerability was found in Netis Netcore Router. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.