Description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 Fail to validate the response body of proxied images, which allows a remote attacker to enact client-side DoS via an SVG file served from an attacker-controlled origin under a non-SVG Content-Type header (e.g. image/png) embedded in an og:image meta tag or Markdown image link.. Mattermost Advisory ID: MMSA-2026-00630
CVSS 4.3EPSS 0.242%Risque 0.44
Voir la source- Publication
- 2026-05-15 19:17:04
- Versions concernées
- <= 11.5.1, <= 10.11.13, <= 11.4.3
- Type
- Core software
- Vecteur
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L