Input validation error in Moodle - CVE-2026-7276
Published: April 29, 2026
Vulnerability identifier: #VU128464
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-7276
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a flaw in message handling of conversations with deleted users. A remote attacker can perform a denial of service (DoS) attack.
Affected software
Moodle
How to mitigate CVE-2026-7276
Install updates from vendor's website.
Moodle - addressed in versions 4.5.11, 5.0.7, 5.1.4