CVE-2026-20719 (GCVE-0-2026-20719)
Vulnerability from cvelistv5
Published
2026-03-25 16:30
Modified
2026-03-26 17:11
Severity ?
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE
  • CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
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
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 11.4.0   ≤ 11.4.0
Version: 11.3.0   ≤ 11.3.1
Version: 11.2.0   ≤ 11.2.3
Version: 10.11.0   ≤ 10.11.11
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