En resumen
- CVE-2026-3114 es una vulnerabilidad MEDIO (CVSS 6.5) que afecta a github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5, github.com/mattermost/mattermost-server/v6.
- Probabilidad de explotación en los próximos 30 días (EPSS): 0.36%, mayor que el 29.3% de las vulnerabilidades.
- Solución: actualizar a 10.11.12+incompatible, 11.2.4+incompatible, 11.3.2+incompatible, 11.4.1+incompatible o posterior.
Description
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 validate decompressed archive entry sizes during file extraction which allows authenticated users with file upload permissions to cause a denial of service via crafted zip archives containing highly compressed entries (zip bombs) that exhaust server memory. Mattermost Advisory ID: MMSA-2026-00598.
NVD description
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 validate decompressed archive entry sizes during file extraction which allows authenticated users with file upload permissions to cause a denial of service via crafted zip archives containing highly compressed entries (zip bombs) that exhaust server memory.. Mattermost Advisory ID: MMSA-2026-00598
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