CVE-2026-12985

Katalog CVE

CVSS 9.3 · Critical EPSS 0,27%

Kerentanan URL Redirection to Untrusted Site ('Open Redirect') pada mattermost server. Skor CVSS 3.1 9.3 (Critical) menurut NVD.

Deskripsi (NVD)

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7 Mattermost failed to validate Dynamic Client Registration redirect URIs by URL component (matching glob patterns against the raw URI string instead) which allows a remote unauthenticated attacker to register an OAuth client with an attacker-controlled callback host that bypasses the configured redirect URI allowlist via a crafted redirect URI that places an allowlisted host/path suffix inside the query string.. Mattermost Advisory ID: MMSA-2026-00700

Rincian

Terbit di NVD

14 September 2026

Terakhir diubah

7 Oktober 2026

Status NVD

Analyzed

CVSS 3.1

9.3 (Critical), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

EPSS (30 hari)

0,27% peluang dieksploitasi; lebih tinggi dari 17,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://mattermost.com/security-updates advisory vendor