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Medium nvd · CVE-2026-4339

CVE-2026-4339: Mattermost versions 10.11.x <= 10.11.18, 11.6.x <= 11.6.3, 11.5.x <= 11.5.6 fail to validate attachment URLs against int

Published Jun 26, 2026 CVSS 6.5

Mattermost versions 10.11.x

SSRF Agentic / MCP

Affected AI Products

mcp server
View original source
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