CVE-2026-112268

MEDIUM 6.3

sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	sgl-project
Product	sglang-router
Published	Oct 19, 2026

Stay Ahead of the Next One

Get instant alerts for sgl-project sglang-router

Be the first to know when new medium vulnerabilities affecting sgl-project sglang-router are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

sgl-project / sglang-router

0 ≤ 0.3.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

Mingkai Yu Qiang Fu Jiadai Wang Jiajia Liu