---
id: CVE-2026-112268
title: sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
summary: >-
  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…
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-863
vendor: sgl-project
product: sglang-router
affected:
  - sglang-router <= 0.3.2
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T13:55:17.198Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112268'
references:
  - url: 'https://github.com/sgl-project/sglang/issues/45006'
  - url: 'https://github.com/sgl-project/sglang/pull/45017'
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.22/sgl-model-gateway/src/server.rs#L641-L675
  - url: >-
      https://www.vulncheck.com/advisories/sglang-router-through-0.3.2-authorization-bypass-via-mesh-ha-management-routes
    label: >-
      VulnCheck Advisory: sglang-router through 0.3.2 Authorization Bypass via
      Mesh HA Management Routes
tags:
  - cve.org
ingestedAt: '2026-10-19T14:30:01.074Z'
---

## Overview

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

- `sglang-router <= 0.3.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.