CVE-2026-16045

MediumCVSS 4.3/10Last modified Aug 18, 2026

Description

Mattermost versions 11.7.x <= 11.7.6, 10.11.x <= 10.11.21 Mattermost failed to restrict OAuth deauthorization and personal access token management endpoints to direct user sessions, which allowed an OAuth app with a delegated user token to revoke the user's authorizations or tokens for other integrations via account-management endpoints.. Mattermost Advisory ID: MMSA-2026-00704

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: Aug 17, 2026
Last modified: Aug 18, 2026
NVD status: Analyzed

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