Auth bypass in Sgl-Project Sglang-Router
CVE-2026-112268
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/sgl-project/sglang/issues/45006 (issue-tracking)
- github.com/sgl-project/sglang/pull/45017 (issue-tracking, patch)
- github.com/sgl-project/sglang/blob/v0.5.22/sgl-model-gateway/src/server.rs (technical-description)
- www.vulncheck.com/advisories/sglang-router-through-0.3.2-authorization-bypass-v… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112268?
- CVE-2026-112268 is a medium-severity vulnerability in Sgl-Project Sglang-Router, classified under Incorrect Authorization. CVSS score: 6.3/10. Published 2026-10-19.
- How severe is CVE-2026-112268?
- Medium severity. CVSS v3 base score is 6.3 out of 10.