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
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| github.com/mattermost/mattermost-server | โ | โ |
| mattermost-server | 11.5.0 | 11.5.2 |
| unknown | โ | โ |
References
Similar Threats
- Unknown CVE-2016-11063
- High CVE-2016-11066
- Unknown CVE-2016-11067
- Unknown CVE-2016-11068
- High CVE-2016-11069
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