Vulnerability DatabaseCVE-2025-3230

CVE-2025-3230:
vulnerability analysis and mitigation

Overview

Mattermost versions 10.7.x <= 10.7.0, 10.6.x <= 10.6.2, 10.5.x <= 10.5.3, and 9.11.x <= 9.11.12 contain a security vulnerability related to personal access token validation, identified as CVE-2025-3230. The vulnerability was disclosed on May 30, 2025, and involves an incorrect implementation of authentication algorithm where the system fails to properly invalidate personal access tokens when a user is deactivated (NVD).

Technical details

The vulnerability is classified as CWE-303 (Incorrect Implementation of Authentication Algorithm) and has been assigned a CVSS v3.1 base score of 5.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N. The technical issue stems from a flaw in the token validation process that fails to properly invalidate personal access tokens upon user deactivation (Wiz, NVD).

Impact

When exploited, this vulnerability allows deactivated users to maintain full system access by continuing to use their previously issued personal access tokens. This creates a potential security breach where users who should no longer have access to the system can still interact with it, potentially compromising system security (NVD, Wiz).

Mitigation and workarounds

Organizations are advised to upgrade to the latest version of Mattermost that contains the fix for this vulnerability. The specific fix versions have not been explicitly stated in the available sources (Mattermost Security).