CVEvulnerability

CVE-2025-53021

4.2 MEDIUM Published 2025-06-24 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-06-24
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.2 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
Weaknesses
CWE-384

Description

A session fixation vulnerability in Moodle 3.x through 3.11.18 allows unauthenticated attackers to hijack user sessions via the sesskey parameter. The sesskey can be obtained without authentication and reused within the OAuth2 login flow, resulting in the victim's session being linked to the attacker's. Successful exploitation results in full account takeover. According to the Moodle Releases page, "Bug fixes for security issues in 3.11.x ended 11 December 2023." NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

Affected configurations

• moodle moodle (>= 3.0.0 <= 3.11.18)

Related

Weakness · CWE (1)

  • CWE-384 Session Fixation weakness

References