CVE-2026-19076
CVE-2026-19076 · Mattermost fails to reject OAuth application sessions in account type switch, allowing account takeover via bearer token
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
Mattermost versions 11.10.x <= 11.10.0, 11.7.x <= 11.7.9, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5 fail to reject OAuth application sessions in the account type switch endpoint, which allows an attacker with a valid OAuth bearer token for a target user to permanently take over that user's SSO-backed account by setting an attacker-controlled password and detaching the account from its identity provider via a crafted request to POST /api/v4/users/login/switch.. Mattermost Advisory ID: MMSA-2026-00758
CVSS 4.4 · Media · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Productos y versiones afectados
mattermost
- Versiones
- ≥ 11.10.0, ≤ 11.10.0: Afectada (semver)
- ≥ 11.7.0, ≤ 11.7.9: Afectada (semver)
- ≥ 11.9.0, ≤ 11.9.1: Afectada (semver)
- ≥ 11.8.0, ≤ 11.8.5: Afectada (semver)
- 11.11.0: No afectada
- 11.10.1: No afectada
- 11.7.10: No afectada
- 11.9.2: No afectada
- 11.8.6: No afectada
Actualiza a 11.10.1; Actualiza a 11.7.10; Actualiza a 11.8.6; Actualiza a 11.9.2