What’s Vulnerable › Vulnerabilities

CVE-2026-112268: sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-19 · updated 2026-10-22
• Weakness: CWE-863

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.

Affected products

• sgl-project sglang-router: through 0.3.2

References

• https://github.com/sgl-project/sglang/blob/v0.5.22/sgl-model-gateway/src/server.rs#L641-L675
• https://github.com/sgl-project/sglang/issues/45006
• https://github.com/sgl-project/sglang/pull/45017
• https://www.vulncheck.com/advisories/sglang-router-through-0.3.2-authorization-bypass-via-mesh-ha-management-routes
• https://github.com/sgl-project/sglang/issues/45006

Get alerted when CVE-2026-112268 or the next vulnerability affects your stack