CVE-2026-22880

CVSS Score & Metrics

Base Score

6.1 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N                                    

Vulnerability Description

Mattermost Mobile Apps versions <=2.37 11.4 2.0.37 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to properly validate the SSO authentication callback origin which allows an attacker controlling a malicious Mattermost server to steal user credentials for a legitimate Mattermost server via relaying the SSO code exchange flow through the mobile application. Mattermost Advisory ID: MMSA-2025-00564

Vulnerability Details

Published Date

May 21, 2026

Last Modified

May 21, 2026

CWE ID

CWE-352

Source

NVD

Vendor

Mattermost

Product

Mattermost

External References

https://mattermost.com/security-updates

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

Discussion (0)

Add Comment