CVEvulnerability

CVE-2026-6334

3.8 LOW Published 2026-05-18 Modified 2026-10-14 Official page ↗
Status
Analyzed
Published
2026-05-18
Last modified
2026-10-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.1 LOW — CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N
CVSS 3.1 ([email protected])
3.8 LOW — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Weaknesses
CWE-305

Description

Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to enforce client identity binding during the OAuth authorization code redemption flow which allows an authenticated OAuth client to redeem authorization codes issued to a different client via a crafted token exchange request.. Mattermost Advisory ID: MMSA-2026-00570

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.14) • mattermost mattermost server (>= 11.5.0 < 11.5.2)

Related

Weakness · CWE (1)

  • CWE-305 Authentication Bypass by Primary Weakness weakness

References