5.9

CVE-2026-3473

Improper file ownership validation in the Boards API allows unauthorised file access

Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate file ownership and access control, which allows an authenticated user to access and download files belonging to other users or teams via crafted Boards API requests using valid file IDs.. Mattermost Advisory ID: MMSA-2026-00620
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerMattermost
≫
Produkt Mattermost
Default Statusunaffected
Version <= 11.6.0
Version 11.6.0
Status affected
Version <= 11.5.3
Version 11.5.0
Status affected
Version <= 11.4.4
Version 11.4.0
Status affected
Version <= 10.11.14
Version 10.11.0
Status affected
Version 11.7.0
Status unaffected
Version 11.6.1
Status unaffected
Version 11.5.4
Status unaffected
Version 11.4.5
Status unaffected
Version 10.11.15
Status unaffected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.15% 0.045
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
9302f53e-dde5-4bf3-b2f2-a83f91ac0eee 5.9 0 0
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://mattermost.com/security-updates
vendor-advisory