En bref
- CVE-2026-20719 est une vulnérabilité ÉLEVÉE (CVSS 7.5) touchant github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5, github.com/mattermost/mattermost-server/v6.
- Probabilité d'exploitation dans les 30 prochains jours (EPSS) : 0.36%, plus élevée que 29.5% des vulnérabilités.
- Correctif : mettre à jour vers 10.11.2+incompatible, 11.2.4+incompatible, 11.3.2+incompatible, 11.4.1+incompatible ou plus récent.
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 prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub. Mattermost Advisory ID: MMSA-2026-00595
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 prevent rendering of external SVGs on link embeds which allows unauthenticated users to crash the Mattermost webapp and desktop app via creating an issue or PR on GitHub.. Mattermost Advisory ID: MMSA-2026-00595
Autres vulnérabilités de github.com/mattermost/mattermost-server
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