What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-10 · updated 2026-06-17
• Weakness: CWE-601

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.

Affected products

• Catalyst User Key Authentication Plugin: 20220819

References

• https://github.com/Cyber-Wo0dy/report/blob/main/moodle/key_user_authentication/v2022081901/key_user_authentication_open_redirection
• https://vuldb.com/?ctiid.308233
• https://vuldb.com/?id.308233
• https://vuldb.com/?submit.564090
• https://github.com/Cyber-Wo0dy/report/blob/main/moodle/key_user_authentication/v2022081901/key_user_authentication_open_redirection

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