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PT-2026-25758

🗓️ 13 Feb 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity
🔗 dbugs.ptsecurity.com👁 22 Views

Mattermost versions fail to canonicalize IPv4 mapped IPv6 addresses before reserved IP validation, enabling SSRF to internal services via IPv4 mapped IPv6 literals.

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30 Jul 2026 00:00Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.14.3
EPSS0.00168
SSVC
22