Vulnerability Description
Unsafe deserialization vulnerability in MixPHP Framework 2.x thru 2.2.17. The sync-invoke TCP server (Server.php:87) receives data from a TCP socket, passes it directly to Opis\Closure\unserialize(), then executes the result via call_user_func(). No authentication or signature verification exists on the TCP connection. An attacker with access to the localhost TCP port (server binds 127.0.0.1) can send a crafted serialized PHP closure to achieve arbitrary code execution.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://gist.github.com/sgInnora/fa46386840fe978a30d7e53c458f2975
- https://github.com/mix-php/mix
- https://github.com/mix-php/mix/blob/v2.2.17/src/sync-invoke/src/Server.php
FAQ
What is CVE-2026-37552?
CVE-2026-37552 is a vulnerability with a CVSS score of 8.4 (HIGH). Unsafe deserialization vulnerability in MixPHP Framework 2.x thru 2.2.17. The sync-invoke TCP server (Server.php:87) receives data from a TCP socket, passes it directly to Opis\Closure\unserialize(), ...
How severe is CVE-2026-37552?
CVE-2026-37552 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-37552?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.