CVE-2026-6339: Mattermost Server: güvenlik açığı

Açıklama (NVD)

Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost Advisory ID: MMSA-2026-00636

Özet bilgiler

Ürün

Mattermost Mattermost Server

CVSS v3.1

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

EPSS

%0,11 (yüzdelik 1)

CWE

CWE-346

Yama

Yok / bilinmiyor

Etkilenen sürümler

Kaynaklar

• NVD kaydı
• mattermost.com
• CWE-346