CVE-2026-42471 Deserialization in n/a
An attacker controlling the server response can achieve remote code execution on the client via unsafe deserialization in the MixPHP Framework sync-invoke client.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-42471?
CVE-2026-42471 is a high-severity unsafe deserialization vulnerability in n/a, published on 1 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unsafe deserialization vulnerability in MixPHP Framework 2.x thru 2.2.17. The sync-invoke client (Connection.php:76) calls unserialize() on data received from the server response, enabling client-side RCE if connecting to a malicious server.
Weakness: CWE-502
Which versions are affected by CVE-2026-42471?
How do I fix CVE-2026-42471?
No fix has been published for CVE-2026-42471 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-42471 being exploited?
There is no known exploitation of CVE-2026-42471 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Sources
Also known as GHSA-jc3r-732w-jg7c.