CVE-2025-53021

MEDIUM

4.2

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.

Details CVE

Score CVSS v3.14.2

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteHIGH

Privileges requisNONE

Interaction utilisateurREQUIRED

Publie6/24/2025

Derniere modification7/9/2025

Sourcenvd

Observations honeypot0

Produits affectes

moodle:moodle

Faiblesses (CWE)

CWE-384

References

https://github.com/moodle/moodle/releases/tag/v3.11.18(cve@mitre.org)

https://moodledev.io/general/releases#moodle-311(cve@mitre.org)

https://rentry.co/moodle-oauth2-cve(cve@mitre.org)

Correlations IOC

Aucune correlation enregistree

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