What’s Vulnerable › Vulnerabilities

CVE-2026-111906: phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta CSRF in Elasticsearch/OpenSearch Admin API Index Operations

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-17 · updated 2026-10-19
• Weakness: CWE-352

Description

phpMyFAQ before 4.1.9 and 4.2.0-alpha before 4.2.0-beta contains a cross-site request forgery vulnerability in the Elasticsearch and OpenSearch administration API endpoints, which do not validate a CSRF token for the create, drop, and import actions. Attackers can lure a user with CONFIGURATION_EDIT permission to a malicious page that triggers these actions, deleting search indexes, forcing re-indexing, or exhausting resources.

Affected products

• thorsten phpMyFAQ: before 4.1.9; from 4.2.0-alpha before 4.2.0-beta — fixed in 4.1.9, 4.2.0-beta

How to fix

Upgrade to a fixed version: thorsten phpMyFAQ 4.1.9, 4.2.0-beta. Check the vendor advisory for mitigations.

References

• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-cmvh-fpmf-8gfx
• https://www.vulncheck.com/advisories/phpmyfaq-before-4.1.9-and-4.2.0-alpha-before-4.2.0-beta-csrf-in-elasticsearch-opensearch-admin-api-index-operations
• https://github.com/thorsten/phpMyFAQ/security/advisories/GHSA-cmvh-fpmf-8gfx

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