CVE-2026-49468 Details.
LiteLLM Proxy < 1.84.0 - Host Header Authentication Bypass
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-49468. What It Means.
LiteLLM Proxy before 1.84.0 derives its public-route authorization check from a URL reconstructed with the unvalidated Host header. A Host value containing a fragment can make a protected request appear to target the public root route, bypassing the API-key check. Version 1.84.0 derives the route from the raw ASGI path instead.
Affected Product. What Is Hit.
- Vendor
- berriai
- Product
- Berriai LiteLLM
FAQ
Common Questions.
LiteLLM Proxy < 1.84.0 - Host Header Authentication Bypass. LiteLLM Proxy before 1.84.0 derives its public-route authorization check from a URL reconstructed with the unvalidated Host header. A Host value containing a fragment can make a protected request appear to target the public root route, bypassing the API-key check. Version 1.84.0 derives the route from the raw ASGI path instead.
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-49468 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-49468 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Berriai LiteLLM to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-49468. Atlas does not run a check for it, so nothing here says whether a particular site is affected.