OS Command Injection in Moodle - CVE-2026-26046
Published: March 26, 2026
Vulnerability identifier: #VU124637
CSH Severity: Low
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-26046
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation in TeX filter admin setting. A remote administrator can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
Moodle
How to mitigate CVE-2026-26046
Install updates from vendor's website.
Moodle - addressed in versions 4.5.9, 5.0.5, 5.1.2