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

Quick assessment

Affected
sgl-project sglang-router
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

sglang-router（sgl-model-gateway）0.3.2 及之前版本存在授权绕过漏洞：由于 端点跳过了控制平面管理员角色的权限检查，持有数据平面 API 密钥的攻击者可访问网格高可用（HA）管理路由。利用该漏洞，攻击者可读取集群拓扑、写入 gossip 配置、修改全局速率限制，并调用 接口静默破坏高可用协调机制。

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
sgl-project sglang-router ≤ 0.3.2 affected
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I. Basic Information for CVE-2026-112268

Vulnerability Information
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Vulnerability Title
sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sgl-project sglang-router 0 ~ 0.3.2 -

II. Public POCs for CVE-2026-112268

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III. Intelligence Information for CVE-2026-112268

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Patches & Fixes for CVE-2026-112268 (1)

Vendor Advisories for CVE-2026-112268 (1)

Other References for CVE-2026-112268 (1)

Same Patch Batch · sgl-project · 2026-10-19 · 7 CVEs total

CVE-2026-112082 7.5 HIGH sgl-project SGLang Expert-Distribution Recording Endpoint expert_distribution.py Scheduler
CVE-2026-112267 6.5 MEDIUM SGLang through 0.5.22 SSRF via bootstrap_host and bootstrap_port on Decode Worker
CVE-2026-112270 6.5 MEDIUM SGLang through 0.5.22 Memory Exhaustion via Mooncake STAGING_RSP chunk_idx
CVE-2026-112269 6.5 MEDIUM SGLang through 0.5.22 Memory Exhaustion via Unauthenticated Mooncake Decode Registrations
CVE-2026-112266 5.9 MEDIUM SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
CVE-2026-112083 5.3 MEDIUM sgl-project SGLang Weight Exporter weight_exporter.py WeightExporter.send_weights_to_remot

IV. Related Vulnerabilities

Same vendor: sgl-project
Same weakness: CWE-863

V. Comments for CVE-2026-112268

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