What’s Vulnerable › Vulnerabilities

CVE-2026-37552

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-01 · updated 2026-07-08
• Weakness: CWE-502

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.

Affected products

• Openmix Mix Php: from 2.0.1 through 2.2.17

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

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