Bug 2491520 (CVE-2026-49468)

Summary: CVE-2026-49468 litellm: LiteLLM: Authentication Bypass via Host Header Injection
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: dschmidt, erezende, ilpinto, jkoehler, jlanda, jwong, kshier, lphiri, ltomasbo, omaciel, simaishi, stcannon, teagle, ttakamiy, yguenane, ykashtan
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in LiteLLM, a proxy server (AI Gateway) used to call Large Language Model (LLM) APIs. A remote attacker could exploit a Host-header parsing vulnerability in the proxy authentication layer. By sending a crafted Host header, an attacker could gain unauthenticated access to protected management routes, potentially leading to full system compromise.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-06-22 21:02:06 UTC
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0,  This vulnerability is fixed in 1.84.0.