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CVE-2026-19867

4.3 Moyenne

Publiée le 16/10/2026 à 09:17 · Modifiée le 16/10/2026 à 21:23 · Analyse NVD en cours · Source : responsibledisclosure@mattermost.com

Description

Mattermost versions 11.10.x <= 11.10.0, 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10 fail to cap the number and size of mention keys stored in a user's notification properties, and to bound the quadratic multibyte-keyword matching performed for each post, which allows an authenticated user to degrade post-processing latency and consume excessive CPU on behalf of other members of any channel they share via storing an oversized notify_props.mention_keys list on their own profile.. Mattermost Advisory ID: MMSA-2026-00773

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Produits concernés

Scores CVSS

VersionScoreSourceVecteur
3.1 4.3 Moyenne responsibledisclosure@mattermost.com CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Faiblesses (CWE)

Références

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