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 (68627)
Windows Win32 Kernel Subsystem Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Microsoft Exchange Server Spoofing Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Microsoft Excel Remote Code Execution Vulnerability. Rated high severity (CVSS 7.8), 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.
Active Directory Certificate Services Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Windows Secure Kernel Mode Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Windows Client-Side Caching Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), 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 USB Video Class System Driver Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.8), 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.
Windows Registry Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
Windows Kernel-Mode Driver Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Windows USB Video Class System Driver Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.8), 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.
Windows USB Video Class System Driver Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.8), 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.
Win32k Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Windows USB Video Class System Driver Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.8), 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.
Windows Secure Kernel Mode Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Windows DWM Core Library Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity.
Microsoft Windows VMSwitch Elevation of Privilege Vulnerability. Rated high severity (CVSS 8.1), this vulnerability is no authentication required. This Use After Free vulnerability could allow attackers to access freed memory to execute arbitrary code or crash the application.
Windows Hyper-V Shared Virtual Disk Elevation of Privilege Vulnerability. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity.
Windows NT OS Kernel Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.8), this vulnerability is low attack complexity. This Integer Overflow vulnerability could allow attackers to cause unexpected behavior through arithmetic overflow.
Windows Registry Elevation of Privilege Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required.
NTLM Hash Disclosure Spoofing Vulnerability. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
Windows DNS Spoofing Vulnerability. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required.
Windows USB Video Class System Driver Elevation of Privilege Vulnerability. Rated medium severity (CVSS 6.8), 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.
Windows Package Library Manager Information Disclosure Vulnerability. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In WS_FTP Server versions before 8.8.9 (2022.0.9), an Incorrect Implementation of Authentication Algorithm in the Web Transfer Module allows users to skip the second-factor verification and log in. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Incorrect permissions in Ivanti Secure Access Client before version 22.7R4 allows a local authenticated attacker to create arbitrary folders. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
Improper authorization in Ivanti Secure Access Client before version 22.7R3 allows a local authenticated attacker to modify sensitive configuration files. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
Element is a Matrix web client built using the Matrix React SDK. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Element is a Matrix web client built using the Matrix React SDK. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Animate versions 23.0.7, 24.0.4 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.
Icinga is a monitoring system which checks the availability of network resources, notifies users of outages, and generates performance data for reporting. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
HCL Traveler for Microsoft Outlook (HTMO) is susceptible to a control flow vulnerability. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Tolgee is an open-source localization platform. 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.
An out-of-bounds read vulnerability in Ivanti Avalanche before 6.4.6 allows a remote unauthenticated attacker to leak sensitive information in memory. 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 the Password History feature in Devolutions DVLS 2024.3.6 and earlier allows a malicious authenticated user to obtain sensitive data via faulty permission. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
The NVMe driver queue processing is vulernable to guest-induced infinite loops. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The hda driver is vulnerable to a buffer over-read from a guest-controlled value. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The virtio_vq_recordon function is subject to a time-of-check to time-of-use (TOCTOU) race condition. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The NVMe driver function nvme_opc_get_log_page is vulnerable to a buffer over-read from a guest-controlled value. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The fetch(3) library uses environment variables for passing certain information, including the revocation file pathname. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
The command ctl_persistent_reserve_out allows the caller to specify an arbitrary size which will be passed to the kernel's memory allocator. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
An exploit is possible where an actor with physical access can manipulate SPI flash without being detected. Rated medium severity (CVSS 5.2), this vulnerability is no authentication required, low attack complexity. No vendor patch available.
A vulnerability was found in Digistar AG-30 Plus 2.6b. Rated low severity (CVSS 2.3), this vulnerability is no authentication required. No vendor patch available.
A vulnerability has been identified in RUGGEDCOM RM1224 LTE(4G) EU (6GK6108-4AM00-2BA2) (All versions < V8.2), RUGGEDCOM RM1224 LTE(4G) NAM (6GK6108-4AM00-2DA2) (All versions < V8.2), SCALANCE M804PB. Rated low severity (CVSS 2.3), this vulnerability is remotely exploitable.
A vulnerability has been identified in Mendix Runtime V10 (All versions < V10.16.0 only if the basic authentication mechanism is used by the application), Mendix Runtime V10.12 (All versions <. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability has been identified in Solid Edge SE2024 (All versions < V224.0 Update 9). Rated high severity (CVSS 7.3), this vulnerability is no authentication required. No vendor patch available.
A vulnerability has been identified in Solid Edge SE2024 (All versions < V224.0 Update 9). Rated high severity (CVSS 7.3), this vulnerability is no authentication required. No vendor patch available.
A vulnerability has been identified in SINEC NMS (All versions < V3.0 SP1). Rated high severity (CVSS 8.3), this vulnerability is low attack complexity. This Incorrect Permission Assignment vulnerability could allow attackers to access resources due to misconfigured permissions.
A vulnerability has been identified in SIPORT (All versions < V3.4.0). Rated high severity (CVSS 8.5), this vulnerability is low attack complexity. No vendor patch available.
A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 3). Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 3). Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Exposure of sensitive system information to an unauthorized control sphere issue exists in Mesh Wi-Fi router RP562B firmware version v1.0.2 and earlier. Rated low severity (CVSS 3.5), this vulnerability is low attack complexity. No vendor patch available.
Active debug code vulnerability exists in Mesh Wi-Fi router RP562B firmware version v1.0.2 and earlier. Rated medium severity (CVSS 4.6), this vulnerability is low attack complexity. No vendor patch available.
Dell SmartFabric OS10 Software, version(s) 10.5.6.x, 10.5.5.x, 10.5.4.x, 10.5.3.x, contain(s) a Files or Directories Accessible to External Parties vulnerability. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
The Futurio Extra plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 2.0.13 via the 'elementor-template' shortcode due to insufficient restrictions on. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity.
The Multiple Page Generator Plugin - MPG plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the mpg_upsert_project_source_block() function in. Rated low severity (CVSS 2.7), this vulnerability is remotely exploitable, low attack complexity.
In mutt and neomutt, PGP encryption does not use the --hidden-recipient mode which may leak the Bcc email header field by inferring from the recipients info. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In mutt and neomutt the In-Reply-To email header field is not protected by cryptographic signing which allows an attacker to reuse an unencrypted but signed email message to impersonate the original. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In neomutt and mutt, the To and Cc email headers are not validated by cryptographic signing which allows an attacker that intercepts a message to change their value and include himself as a one of. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
An attacker who gains local membership to sapsys group could replace local files usually protected by privileged access. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity. No vendor patch available.
SAP NetWeaver AS Java allows an unauthenticated attacker to brute force the login functionality in order to identify the legitimate user IDs. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
In SAP NetWeaver Java (Software Update Manager 1.1), under certain conditions when a software upgrade encounters errors, credentials are written in plaintext to a log file. Rated medium severity (CVSS 4.7). No vendor patch available.
GNOME libsoup before 3.6.0 allows HTTP request smuggling in some configurations because '\0' characters at the end of header names are ignored, i.e., a "Transfer-Encoding\0: chunked" header is. 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.
libosdp is an implementation of IEC 60839-11-5 OSDP (Open Supervised Device Protocol) and provides a C library with support for C++, Rust and Python3. Rated medium severity (CVSS 5.1), this vulnerability is no authentication required. No vendor patch available.
Orchid is a @laravel package that allows for rapid application development of back-office applications, admin/user panels, and dashboards. Rated medium severity (CVSS 4.1), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
UsersController.php in Run.codes 1.5.2 and older has a reset password race condition vulnerability. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
In Gliffy Online an insecure configuration was discovered in versions before 4.14.0-6. Rated medium severity (CVSS 6.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
A vulnerability classified as problematic has been found in SourceCodester Hospital Management System 1.0. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
In Eclipse OpenJ9 versions up to 0.47, the JNI function GetStringUTFLength may return an incorrect value which has wrapped around. Rated medium severity (CVSS 5.3), 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.
In the Linux kernel, the following vulnerability has been resolved: fork: only invoke khugepaged, ksm hooks if no error There is no reason to invoke these hooks early against an mm that is in an. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
Sensitive information disclosure during file browsing due to improper symbolic link handling. Rated low severity (CVSS 3.3), this vulnerability is low attack complexity. No vendor patch available.
Arbitrary file overwrite during recovery due to improper symbolic link handling. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
A flaw was found in moodle. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A flaw was found in moodle. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A flaw was found in moodle. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A flaw was found in moodle. Rated low severity (CVSS 3.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
The D-Link DSL6740C modem has an Incorrect Use of Privileged APIs vulnerability, allowing unauthenticated remote attackers to modify any user’s password by leveraging the API, thereby granting access. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Insufficient validation performed on the REST API License file in Paxton Net2 before 6.07.14023.5015 (SR4) enables use of the REST API with an invalid License File. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A vulnerability classified as problematic has been found in ZKTeco ZKBio Time 9.0.1. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Mattermost versions 10.0.x <= 10.0.0 and 9.11.x <= 9.11.2 fail to properly query ElasticSearch when searching for the channel name in channel switcher which allows an attacker to get private channels. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
Mattermost versions 9.11.x <= 9.11.2, and 9.5.x <= 9.5.10 fail to protect the mfa code against replay attacks, which allows an attacker to reuse the MFA code within ~30 seconds. Rated medium severity (CVSS 4.8), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
The Magical Addons For Elementor plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.2.4 via the get_content_type function in. 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.
In the Linux kernel, the following vulnerability has been resolved: macsec: Fix use-after-free while sending the offloading packet KASAN reports the following UAF. Rated high severity (CVSS 7.8), 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.
In the Linux kernel, the following vulnerability has been resolved: netdevsim: Add trailing zero to terminate the string in nsim_nexthop_bucket_activity_write() This was found by a static analyzer. 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.
In the Linux kernel, the following vulnerability has been resolved: netfilter: Fix use-after-free in get_info() ip6table_nat module unload has refcnt warning for UAF. Rated high severity (CVSS 7.8), 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.
In the Linux kernel, the following vulnerability has been resolved: bpf: Free dynamically allocated bits in bpf_iter_bits_destroy() bpf_iter_bits_destroy() uses "kit->nr_bits <= 64" to check whether. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. This Memory Leak vulnerability could allow attackers to exhaust available memory leading to denial of service.
In the Linux kernel, the following vulnerability has been resolved: mlxsw: spectrum_ipip: Fix memory leak when changing remote IPv6 address The device stores IPv6 addresses that are used for. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_payload: sanitize offset and length before calling skb_checksum() If access to offset + length is larger than the. Rated medium severity (CVSS 6.2), this vulnerability is no authentication required, low attack complexity. Public exploit code available.
In the Linux kernel, the following vulnerability has been resolved: fsdax: dax_unshare_iter needs to copy entire blocks The code that copies data from srcmap to iomap in dax_unshare_iter is very very. Rated high severity (CVSS 7.1), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: ACPI: CPPC: Make rmw_lock a raw_spin_lock The following BUG was triggered: ============================= [ BUG: Invalid wait. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.
In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: Check if more than chunk-size bytes are written A incorrectly formatted chunk may decompress into more than. Rated high severity (CVSS 7.1), 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.