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 (68912)
Insufficient filtering of grade report history made it possible for teachers to access the names of users they could not otherwise access. 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.
Authenticated users were able to enumerate other users' names via the learning plans page. 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.
Insufficient sanitizing in backup resulted in an arbitrary file read risk. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
In Spring Vault, versions 3.0.x prior to 3.0.2 and versions 2.3.x prior to 2.3.3 and older versions, an application is vulnerable to insertion of sensitive information into a log file when it. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A flaw was found in KVM. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity.
The course participation report required additional checks to prevent roles being displayed which the user did not have access to view. 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.
A flaw was found in the QEMU implementation of VMWare's paravirtual RDMA device. Rated medium severity (CVSS 6.3), this vulnerability is no authentication required, low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
A vulnerability in the deterministic random bit generator (DRBG), also known as pseudorandom number generator (PRNG), in Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability in the implementation of the Cisco Network Plug-and-Play (PnP) agent of Cisco DNA Center could allow an authenticated, remote attacker to view sensitive information in clear text. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability in the management API of Cisco DNA Center could allow an authenticated, remote attacker to elevate privileges in the context of the web-based management interface on an affected. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability in the CLI of Cisco IOS XE SD-WAN Software could allow an authenticated, local attacker to execute arbitrary commands with elevated privileges. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
The update process in OMICRON StationGuard and OMICRON StationScout before 2.21 can be exploited by providing a modified firmware update image. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Versions of the package code-server before 4.10.1 are vulnerable to Missing Origin Validation in WebSockets handshakes. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An issue was discovered in Veritas NetBackup before 10.0 on Windows. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Minio is a Multi-Cloud Object Storage framework. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Resource to Wrong Sphere vulnerability could allow attackers to access resources from an unintended security context.
Minio is a Multi-Cloud Object Storage framework. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
`cilium-cli` is the command line interface to install, manage, and troubleshoot Kubernetes clusters running Cilium. Rated medium severity (CVSS 4.1), this vulnerability is low attack complexity.
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform, and Nextcloud Enterprise Server is the enterprise version of the file server software. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Illustrator version 26.5.2 (and earlier) and 27.2.0 (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.
A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11.0.0-M1 to. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Mattermost fails to check the "Show Full Name" setting when rendering the result for the /plugins/focalboard/api/v2/users API call, allowing an attacker to learn the full name of a board owner. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability exists in ClearPass Policy Manager that allows for an attacker with administrative privileges to access sensitive information in a cleartext format. 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 ClearPass Policy Manager could allow a remote attacker authenticated with low privileges to access sensitive information. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In affected versions, a heap-based buffer over-read condition occurs when the message field indicates more data than is present in the message field in Rockwell Automation's ThinManager ThinServer. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Out of bounds read in ANGLE in Google Chrome prior to 111.0.5563.110 allowed a remote attacker who had compromised the renderer process 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.
Out of bounds read in GPU Video in Google Chrome prior to 111.0.5563.110 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.
MGT-COMMERCE CloudPanel ships with a static SSL certificate to encrypt communications to the administrative interface, shared across every installation of CloudPanel. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. Public exploit code available and no vendor patch available.
Permissions vulnerabiltiy found in Xuxueli xxl-job v2.2.0, v 2.3.0 and v.2.3.1 allows attacker to obtain sensitive information via the pageList parameter. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
McAfee Total Protection prior to 16.0.50 may allow an adversary (with full administrative access) to modify a McAfee specific Component Object Model (COM) in the Windows Registry. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.
An authenticated attacker can leverage an exposed “box” object to read and write arbitrary files from disk, provided those files can be parsed as yaml or JSON. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
IBM Security Guardium Key Lifecycle Manager 3.0, 3.0.1, 4.0, 4.1, and 4.1.1 stores user credentials in plain clear text which can be read by a local user. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Insufficiently Protected Credentials vulnerability could allow attackers to obtain user credentials due to weak protection mechanisms.
IBM Aspera Faspex 4.4.2 could allow a remote authenticated attacker to obtain sensitive credential information using specially crafted XML input. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
IBM Security Guardium Key Lifecycle Manager 3.0, 3.0.1, 4.0, 4.1, and 4.1.1 could allow an authenticated user to obtain sensitive information from log files. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists in the Data Server that could cause access to delete files in the IGSS project report directory, this could lead to loss. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Insufficient Session Expiration in GitHub repository answerdev/answer prior to 1.0.6. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Business Logic Errors in GitHub repository answerdev/answer prior to 1.0.6. Rated medium severity (CVSS 5.4), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Business Logic Errors in GitHub repository answerdev/answer prior to 1.0.6. Rated low severity (CVSS 3.8), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.
Observable Response Discrepancy in GitHub repository answerdev/answer prior to 1.0.6. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Improper Restriction of Excessive Authentication Attempts in GitHub repository answerdev/answer prior to 1.0.6. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Observable Timing Discrepancy in GitHub repository answerdev/answer prior to 1.0.6. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
The WP Meta SEO WordPress plugin before 4.5.3 does not authorize several ajax actions, allowing low-privilege users to make updates to certain data and leading to an arbitrary redirect vulnerability. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
Excessive Iteration vulnerability in Apache Software Foundation Apache Sling Resource Merger.2.0 before 1.4.2. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Versions of the package collection.js before 6.8.1 are vulnerable to Prototype Pollution via the extend function in Collection.js/dist/node/iterators/extend.js. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.
Miniflux is a feed reader. 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.
Rockwell Automation Modbus TCP Server AOI prior to 2.04.00 is vulnerable to an unauthorized user sending a malformed message that could cause the controller to respond with a copy of the most recent. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Discourse is an open-source discussion platform. 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.
A vulnerability has been found in GPAC 2.3-DEV-rev35-gbbca86917-master and classified as problematic. Rated high severity (CVSS 7.8), this vulnerability is no authentication required, low attack complexity. Public exploit code available and no vendor patch available.
russh is a Rust SSH client and server library. Rated medium severity (CVSS 5.9), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.
Discourse is an open-source messaging platform. 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.
Zoom for Windows clients before version 5.13.3, Zoom Rooms for Windows clients before version 5.13.5 and Zoom VDI for Windows clients before 5.13.1 contain an information disclosure vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Improper access control in Samsung Calendar prior to versions 12.4.02.9000 in Android 13 and 12.3.08.2000 in Android 12 allows local attacker to configure improper status. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
The sensitive information exposure vulnerability in Quick Share Agent prior to versions 3.5.14.18 in Android 12 and 3.5.16.20 in Android 13 allows to local attacker to access MAC address without. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
Improper input validation vulnerability in SoftSim TA prior to SMR Mar-2023 Release 1 allows local attackers access to protected data. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Improper access control vulnerability in Call application prior to SMR Mar-2023 Release 1 allows local attackers to access sensitive information without proper permission. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Rated medium severity (CVSS 6.5), this vulnerability is low attack complexity.
The WP Simple Shopping Cart plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 4.6.3 due to the plugin saving shopping cart data exports in a. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
VX Search v13.8 and v14.7 was discovered to contain an unquoted service path vulnerability which allows attackers to execute arbitrary commands at elevated privileges via a crafted executable file. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. No vendor patch available.
Permissions vulnerability found in isoftforce Dreamer CMS v.4.0.1 allows local attackers to obtain sensitive information via the AttachmentController parameter. Rated medium severity (CVSS 5.3). Public exploit code available and no vendor patch available.
Sudo before 1.9.13 does not escape control characters in sudoreplay output. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Sudo before 1.9.13 does not escape control characters in log messages. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
OpenSIPS, a Session Initiation Protocol (SIP) server implementation, has a memory leak starting in the 2.3 branch and priot to versions 3.1.8 and 3.2.5. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
An issue was discovered in Dnsmasq before 2.90. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
IBM Robotic Process Automation 21.0.1 through 21.0.7 and 23.0.0 through 23.0.1 could allow a user with physical access to the system due to session tokens for not being invalidated after a password. Rated low severity (CVSS 3.2), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
IBM Robotic Process Automation 21.0.1 through 21.0.5 is vulnerable to insufficiently protecting credentials. 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.
IBM Sterling B2B Integrator Standard Edition 6.0.0.0 through 6.0.3.7 and 6.1.0.0 through 6.1.2.1 could allow a privileged user to obtain sensitive information that could aid in further attacks. 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.
IBM MQ Certified Container 9.3.0.1 through 9.3.0.3 and 9.3.1.0 through 9.3.1.1 could allow authenticated users with the cluster to be granted administration access to the MQ console due to improper. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
In Eclipse BIRT, starting from version 2.6.2, the default configuration allowed to retrieve a report from the same host using an absolute HTTP path for the report parameter (e.g. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The armv8_dec_aes_gcm_full() API of Arm AArch64cryptolib before 86065c6 fails to the verify the authentication tag of AES-GCM protected data, leading to a man-in-the-middle attack. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required.
Generation of Error Message Containing Sensitive Information vulnerability in Apache Software Foundation Apache Airflow.5.2. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Microsoft OneDrive for MacOS Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Microsoft OneDrive for Android Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
Microsoft OneDrive for Android Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
Microsoft PostScript and PCL6 Class Printer Driver Remote Code Execution Vulnerability. Rated high severity (CVSS 8.8), 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.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Elevation of Privilege Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
Windows Secure Channel Denial of Service Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Out-of-bounds Read vulnerability could allow attackers to read data from memory outside the intended buffer boundaries.
Windows Graphics Component Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.0).
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity.
Microsoft PostScript and PCL6 Class Printer Driver Information Disclosure Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Windows Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.