This affects the package codeception/codeception from 4.0.0 and before 4.1.22, before 3.1.3. The RunProcess class can be leveraged as a gadget to run arbitrary commands on a system that is deserializing user input without validation.
https://snyk.io/vuln/SNYK-PHP-CODECEPTIONCODECEPTION-1324585
https://github.com/Codeception/Codeception/pull/6241
https://github.com/JinYiTong/poc
https://github.com/Codeception/Codeception/blob/4.1/ext/RunProcess.php%23L52
Source: Mitre, NVD
Published: 2021-08-11
Updated: 2026-06-17
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.00561