Critical Remote Code Execution Vulnerability (CVE‑2026‑42471) in MixPHP Framework 2.2.17 Allows Arbitrary Code Execution
What Happened — A deserialization flaw in MixPHP Framework 2.2.17 (CVE‑2026‑42471) lets an attacker send a crafted payload to unserialize() and trigger the __destruct() magic method, resulting in remote code execution on the host. The exploit is publicly available on Exploit‑DB (EDB‑52590) and works against default installations on PHP 8.3+.
Why It Matters for TPRM —
- The vulnerability can be weaponised against any third‑party SaaS or on‑premise product that embeds MixPHP, exposing your data and systems.
- Exploitation requires only a POST request, making it trivial to weaponise at scale.
- No patch has been released by the upstream project at the time of disclosure, increasing exposure windows for downstream customers.
Who Is Affected — Organizations that develop, host, or consume web applications built on the MixPHP framework (common in custom SaaS portals, e‑commerce sites, and internal tools).
Recommended Actions —
- Immediately inventory all assets that include MixPHP 2.x and verify version numbers.
- Apply any available patches or upgrade to a version > 2.2.17 where the issue is fixed.
- If upgrade is not possible, implement a web‑application firewall rule to block unserialize‑related payloads and enforce strict input validation.
- Conduct a code review for unsafe
unserialize()usage in custom extensions.
Technical Notes — The flaw is an unsafe deserialization leading to remote code execution via a malicious object (class A with a __destruct() that calls system()). No CVE‑specific mitigations have been published yet. Source: Exploit‑DB 52590