CVE-2026-108851: medium-severity vulnerability in thorsten phpMyFAQ
phpMyFAQ through 4.1.10 Missing Authorization via MCP Server faq_search Tool
Published · Updated
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.8epss 0.1%
exploitation probability
0.1%top 99% of all CVEs
observed exploitation
nono source reports it
phpMyFAQ through 4.1.10 contains a missing authorization vulnerability in the MCP server faq_search tool that allows MCP clients to read restricted FAQs because Search::searchDatabase() never applies user or group permission checks. Attackers connected to the phpmyfaq:mcp:server can issue search queries to retrieve the full question and answer text of active FAQs restricted to specific users or groups.
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
thorsten · phpMyFAQRelated CVEs — thorsten phpMyFAQ
In the same product, most dangerous first.
CVE-2024-55889MEDIUMphpMyFAQ Vulnerable to Unintended File Download Triggered by Embedded FramesEPSS 2.2%CVE-2025-69200HIGHphpMyFAQ has unauthenticated config backup download via /api/setup/backupEPSS 2.1%CVE-2026-24421MEDIUMphpMyFAQ missing authorization exposes /api/setup/backup to any authenticated userEPSS 1.8%CVE-2024-28105HIGHphpMyFAQ's File Upload Bypass at Category Image Leads to RCEEPSS 1.5%CVE-2024-27299HIGHphpMyFAQ SQL Injection at "Save News"EPSS 1.2%CVE-2024-28107HIGHphpMyFAQ SQL injections at insertentry & saveentryEPSS 1.0%
References
https://github.com/thorsten/phpMyFAQhttps://github.com/thorsten/phpMyFAQ/blob/4.1.10/phpmyfaq/src/phpMyFAQ/Search.php#L137-L194https://github.com/thorsten/phpMyFAQ/blob/4.1.10/phpmyfaq/src/phpMyFAQ/Service/McpServer/FaqSearchToolExecutor.php#L56-L102https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/phpmyfaq-mcp-search-visibilityhttps://www.vulncheck.com/advisories/phpmyfaq-through-4.1.10-missing-authorization-via-mcp-server-faq-search-tool