CVE-2026-9597

EPSS 0.14%
Veröffentlicht 13.07.2026 08:17:36
Zuletzt bearbeitet 13.07.2026 20:53:34
Erkennungen
Login

Deactivated guest accounts can authenticate via magic-link token in Mattermost REST API login endpoint

Mattermost versions 11.7.x <= 11.7.2, 11.6.x <= 11.6.4 fail to verify whether a guest account is deactivated before creating a session in the magic-link token login path, which allows a deactivated guest user to obtain a fully functional session via a magic-link token issued prior to deactivation.. Mattermost Advisory ID: MMSA-2026-00681

Betroffene Produkte Warnungen 0 Metriken 2 CWE 1 Referenzen 4

NVD 2 VulnDex Vulnerability Enrichment 1

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Mattermost ≫ Mattermost Server Version >= 11.6.0 < 11.6.5

Mattermost ≫ Mattermost Server Version >= 11.7.0 < 11.7.3

VulnDex Vulnerability Enrichment

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.14%	0.038

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
responsibledisclosure@mattermost.com	5.4	2.8	2.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CWE-305 Authentication Bypass by Primary Weakness

The authentication algorithm is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.

https://mattermost.com/security-updates

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2026-9597

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2026-9597

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2026-9597

EUVD

Team-orientierte Vulnerability Management Plattform

Features der Plattform

CVE-2026-9597