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CVE-2025-4513: Catalyst User Key Authentication Plugin Logout logout.php redirect

4.3 CVSS

Description

A vulnerability classified as problematic was found in Catalyst User Key Authentication Plugin 20220819 on Moodle. Affected by this vulnerability is an unknown functionality of the file /auth/userkey/logout.php of the component Logout. The manipulation of the argument return leads to open redirect. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. In Catalyst User Key Authentication Plugin 20220819 für Moodle wurde eine problematische Schwachstelle entdeckt. Dabei geht es um eine nicht genauer bekannte Funktion der Datei /auth/userkey/logout.php der Komponente Logout. Mit der Manipulation des Arguments return mit unbekannten Daten kann eine open redirect-Schwachstelle ausgenutzt werden. Die Umsetzung des Angriffs kann dabei über das Netzwerk erfolgen. Der Exploit steht zur öffentlichen Verfügung.

Classification

CVE ID: CVE-2025-4513

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.3

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem Types

Open Redirect

Affected Products

Vendor: Catalyst

Product: User Key Authentication Plugin

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.09% (probability of being exploited)

EPSS Percentile: 26.2% (scored less or equal to compared to others)

EPSS Date: 2025-06-08 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-4513
https://vuldb.com/?id.308233
https://vuldb.com/?ctiid.308233
https://vuldb.com/?submit.564090
https://github.com/Cyber-Wo0dy/report/blob/main/moodle/key_user_authentication/v2022081901/key_user_authentication_open_redirection

Timeline