4.2

CVE-2025-53021

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.

Verknüpft mit AI von unstrukturierten Daten zu bestehenden CPE der NVD
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Data is provided by the National Vulnerability Database (NVD)
Moodle ≫ Moodle Version >= 3.0.0 <= 3.11.18
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.13% 0.334
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
cve@mitre.org 4.2 1.6 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-384 Session Fixation

Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.