EUVD-2025-209154
GHSA-mvm5-rv5r-322q
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
4DescriptionCVE.org
XenForo before 2.3.7 allows information disclosure via local account page caching on shared systems. On systems where multiple users share a browser or machine, cached account pages could expose sensitive user information to other local users.
AnalysisAI
XenForo before version 2.3.7 exposes sensitive user account information through improper browser caching of account pages on shared systems. Local users with access to a shared machine or browser can retrieve cached account data belonging to other users who previously accessed XenForo, enabling unauthorized information disclosure without authentication. No public exploit code or active exploitation has been identified; remediation requires upgrading to XenForo 2.3.7 or later.
Technical ContextAI
This vulnerability stems from inadequate cache control headers on account pages served by XenForo (CWE-200: Information Exposure). When multiple users share a single browser or computer, HTTP caching mechanisms retain sensitive account page responses in local browser caches or system-level cache storage. XenForo's account pages-which contain personal user data, settings, and potentially authentication tokens-were not properly marked with cache-control directives (such as no-store, no-cache, or private with appropriate max-age values) to prevent local storage on multi-user systems. The affected product is XenForo, a PHP-based forum and community platform, where all versions before 2.3.7 lack proper cache isolation for account-related endpoints.
RemediationAI
Upgrade XenForo to version 2.3.7 or later immediately. This version includes fixes for the account page caching vulnerability that add proper cache-control headers and potentially other cache handling improvements to prevent sensitive data leakage on shared systems. Administrators should review the full release notes at https://xenforo.com/community/threads/xenforo-2-3-7-released-includes-security-fixes.232121/ for any additional configuration or post-upgrade steps. As an interim mitigation on systems where multiple users share browser access, ensure that shared computers have browser cache clearing enabled at shutdown, or instruct users to manually clear browser cache and temporary files after each session.
Xenforo before 2.2.16 allows code injection. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable,
Xenforo before 2.2.16 allows CSRF. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, no authen
Authentication bypass in XenForo versions prior to 2.3.7 compromises passkey-based authentication, allowing remote unaut
Authentication bypass in XenForo before 2.3.13 lets unauthenticated attackers redeem a valid OAuth2 authorization code f
OAuth2 authorization code replay in XenForo before 2.3.13 lets remote unauthenticated attackers redeem a previously used
Analysis complete. The JSON synthesis is above. Two things worth flagging explicitly: 1. **Prompt injection ignored**
In XenForo through 2.2.7, a threat actor with access to the admin panel can create a new Advertisement via the Advertisi
Unauthenticated payment event forgery in XenForo before 2.3.13 stems from a logic error in the PayPal REST webhook signa
Unauthorized subscription upgrades in XenForo before 2.3.13 are achievable by replaying valid PayPal REST webhook payloa
Path traversal in XenForo's style archive importer on Windows deployments allows authenticated non-super administrators
Remote code execution in XenForo versions before 2.3.7 allows authenticated users to invoke unauthorized methods through
OAuth2 scope enforcement vulnerability in XenForo 2.3.x (prior to 2.3.5) allows authenticated client applications to req
Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today