CVE-2021-23394: STD42 Elfinder

Critical severity, CVSS 9.8. EPSS: 18.9% chance of exploitation in the next 30 days.

The package studio-42/elfinder before 2.1.58 are vulnerable to Remote Code Execution (RCE) via execution of PHP code in a .phar file. NOTE: This only applies if the server parses .phar files as PHP.

Affected products

• STD42 Elfinder: before 2.1.58 (fixed in 2.1.58)

Published 2021-06-13. Last modified 2026-06-17.