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Friday, 16 October 2026
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Incident database

Critical Bifrost AI Gateway Flaw Allows Unauthenticated Command Execution

A critical vulnerability (CVE-2026-90898, CVSS 9.8) in the open-source Bifrost AI gateway lets an unauthenticated attacker execute arbitrary commands on the gateway server with a single HTTP request when management authentication is not properly enabled, affecting all Bifrost HTTP transport versions before 2.1.0.

Disclosed 22 September 2026 · Record updated 1 October 2026

Impact

Unauthenticated remote code execution possible on affected Bifrost gateway servers routing requests to over 20 LLM providers.

Our coverage

Sources

  1. thehackernews.comhttps://thehackernews.com/2026/09/critical-bifrost-ai-gateway-flaw-lets.html