CVE-2025-59480

Inadequate validation of SSO redirect credentials permits credential theft

State: Published
Severity: 6.1 Medium
Published: Nov 13, 2025
Updated: Nov 13, 2025
Reserved: Oct 15, 2025

Description

Mattermost Mobile Apps versions <=2.32.0 fail to verify that SSO redirect tokens originate from the trusted server, which allows a malicious Mattermost instance or on-path attacker to obtain user session credentials via crafted token-in-URL responses

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N	Mattermost

Weaknesses

CWE-352 Cross-Site Request Forgery (CSRF)

Affected Products

Product	Versions
MattermostMattermost	2.32.0 and earlierAffected 2.33.0Not affected

References

https://mattermost.com/security-updates

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