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CVE-2026-20719 DoS via URL Previews Rendering Malicious SVGs

🗓️ 25 Mar 2026 16:30:47Reported by MattermostType 
vulnrichment
 vulnrichment
🔗 github.com👁 4 Views

Unauthenticated DoS in Mattermost via external SVGs in link previews across multiple versions.

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25 Mar 2026 16:30Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00351
SSVC
4