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CVE-2026-90898 Bifrost unauthenticated remote code execution via MCP stdio client registration

🗓️ 14 Sep 2026 10:18:53Reported by JFROGType 
vulnrichment
 vulnrichment
🔗 github.com👁 5 Views

Unauthenticated RCE in Bifrost via MCP stdio client registration running programs as appuser.

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14 Sep 2026 10:18Current
5.7Medium risk
Vulners AI Score5.7
CVSS 3.19.8
EPSS0.00343
SSVC
5