CVE-2026-128017

CVSS 6.3 (medium) · published 2026-11-13

FrankenPHP before 1.13.4 contains a double free vulnerability in worker mode that frees SG(request_info).content_type_dup twice when a worker script ends its loop after a non-form POST request. Unauthenticated attackers can send repeated JSON POST requests until the worker loop ends, aborting the whole process when USE_ZEND_ALLOC=0 is set.

Weakness: CWE-415

Source: NVD CVE-2026-128017

References

• https://github.com/php/frankenphp/commit/8777cc2e5c872ebb869fa2b5f972a913648621e8
• https://github.com/php/frankenphp/security/advisories/GHSA-h764-4wh7-m7j2
• https://www.vulncheck.com/advisories/frankenphp-before-1.13.4-double-free-in-worker-mode-via-non-form-post
• https://github.com/php/frankenphp/security/advisories/GHSA-h764-4wh7-m7j2

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.