CVE-2026-112268 sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
Attackers with data-plane API keys can bypass authorization to access management routes, read topology, modify configuration, and shut down HA coordination.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-112268?
CVE-2026-112268 is a medium-severity missing authorization vulnerability in sgl-project sglang-router, published on 19 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
sglang-router (sgl-model-gateway) through 0.3.2 contains an authorization bypass vulnerability that allows holders of the data-plane API key to access mesh HA management routes because /ha/* endpoints skip control-plane Admin role checks. Attackers can read cluster topology, write gossiped configuration, change global rate limits, and call POST /ha/shutdown to silently dissolve HA coordination.
Weakness: CWE-863
Which versions are affected by CVE-2026-112268?
How do I fix CVE-2026-112268?
No fix has been published for CVE-2026-112268 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-112268 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112268 exists.
Sources
Also known as GHSA-q6x7-8366-3wrx.