CVE-2026-19867
CVE-2026-19867 · Uncapped mention keys in user notification properties allow CPU exhaustion during post processing
Esta página presenta datos de fuentes públicas de vulnerabilidades. Consulta el aviso original antes de actualizar.
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
CVSS 4.3 · Media · EPSS 0,2% · Corrección disponible
- Publicación
- Actualización
Productos y versiones afectados
mattermost
- Versiones
- ≥ 11.10.0, ≤ 11.10.0: Afectada (semver)
- ≥ 11.9.0, ≤ 11.9.1: Afectada (semver)
- ≥ 11.8.0, ≤ 11.8.5: Afectada (semver)
- ≥ 11.7.0, ≤ 11.7.10: Afectada (semver)
- 11.11.0: No afectada
- 11.10.1: No afectada
- 11.9.2: No afectada
- 11.8.6: No afectada
- 11.7.11: No afectada
Actualiza a 11.10.1; Actualiza a 11.7.11; Actualiza a 11.8.6; Actualiza a 11.9.2