CVE-2026-6334 | Mattermost up to 10.11.13/11.5.1 OAuth Authorization authentication bypass

SecurityVulns
Yanac

A vulnerability marked as problematic has been reported in Mattermost up to 10.11.13/11.5.1. This issue affects some unknown processing of the component OAuth Authorization. The manipulation leads to authentication bypass by primary weakness.

This vulnerability is referenced as CVE-2026-6334. Remote exploitation of the attack is possible. No exploit is available.

It is suggested to upgrade the affected component.VulDB Recent EntriesRead More