Deserialization in N/a

CVE-2026-42471

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.

Vulnerability class: Insecure Deserialization

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.019 (79.1th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-42471: held from 0.018 to 0.019.

EPSS over last 30 days · oldest: 0.018 · newest: 0.019 · change: +0.002

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-42471?
CVE-2026-42471 is a high-severity vulnerability in N/a, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-05-01.
How severe is CVE-2026-42471?
High severity. CVSS v3 base score is 8.1 out of 10.