CVE-2026-112268
sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 19, 2026
- Updated
- Oct 22, 2026
- Reserved
- Oct 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
sglang-routersgl-project |
|
References
- https://github.com/sgl-project/sglang/issues/45006issue-tracking
- https://github.com/sgl-project/sglang/pull/45017patchissue-tracking
- https://github.com/sgl-project/sglang/blob/v0.5.22/sgl-model-gateway/src/server.rs#L641-L675technical-description
- VulnCheck Advisory: sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routesthird-party-advisory
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