CVE-2016-5431: PHP Jose Project PHP Jose

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

The PHP JOSE Library by Gree Inc. before version 2.2.1 is vulnerable to key confusion/algorithm substitution in the JWS component resulting in bypassing the signature verification via crafted tokens.

Affected products

• PHP Jose Project PHP Jose: before 2.2.1 (fixed in 2.2.1)

Published 2019-08-07. Last modified 2026-06-17.