CVE-2026-108851

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

4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

3.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

CWE

CWE-862

Published

2026-10-11

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

References

• https://github.com/thorsten/phpMyFAQ
• https://github.com/thorsten/phpMyFAQ/blob/4.1.10/phpmyfaq/src/phpMyFAQ/Search.php#L137-L194
• https://github.com/thorsten/phpMyFAQ/blob/4.1.10/phpmyfaq/src/phpMyFAQ/Service/McpServer/FaqSearchToolExecutor.php#L56-L102
• https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/phpmyfaq-mcp-search-visibility
• https://www.vulncheck.com/advisories/phpmyfaq-through-4.1.10-missing-authorization-via-mcp-server-faq-search-tool

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