CVE-2026-26233

MEDIUM

4.3

Beschreibung

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to rate limit login requests which allows unauthenticated remote attackers to cause denial of service (server crash and restart) via HTTP/2 single packet attack with 100+ parallel login requests.. Mattermost Advisory ID: MMSA-2025-00566

CVE Details

CVSS v3.1 Bewertung4.3

SchweregradMEDIUM

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

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht3/25/2026

Zuletzt geandert3/26/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

mattermost:mattermost_server

Schwachen (CWE)

CWE-400

Referenzen

https://mattermost.com/security-updates(responsibledisclosure@mattermost.com)

IOC Korrelationen

Keine Korrelationen erfasst

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