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CVE-2026-112266— SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching

Quick assessment

Affected
sgl-project sglang
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 0.5.22 及更早版本中存在一个拒绝服务（DoS）漏洞。该漏洞允许 API 客户端通过提供由客户端控制的短请求 ID（rid）来中断其他用户正在进行的生成请求。攻击者可以提交带有单个十六进制字符 rid 的流式 请求，随后断开连接，从而触发前缀匹配中止逻辑，导致所有其他客户端的请求被终止。

CVSS 5.9 · Medium

Possible ATT&CK Techniques 1 AI

T1499.003 · Application Exhaustion Flood

Affected Version Matrix 1

VendorProduct Version RangeStatus
sgl-project sglang ≤ 0.5.22 affected
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I. Basic Information for CVE-2026-112266

Vulnerability Information
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Vulnerability Title
SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
Source: CVE Program / CVE List V5
Vulnerability Description
SGLang through 0.5.22 contains a denial of service vulnerability that allows API clients to abort other users' in-flight generation requests by supplying a short client-controlled rid. Attackers can submit streaming /generate requests with single hex character rids and disconnect, triggering prefix-matching abort logic that terminates all other clients' requests.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
部分比较
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sgl-project sglang 0 ~ 0.5.22 -

II. Public POCs for CVE-2026-112266

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III. Intelligence Information for CVE-2026-112266

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Vendor Advisories for CVE-2026-112266 (1)

Other References for CVE-2026-112266 (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-2026-112268 6.3 MEDIUM sglang-router through 0.3.2 Authorization Bypass via Mesh HA Management Routes
CVE-2026-112083 5.3 MEDIUM sgl-project SGLang Weight Exporter weight_exporter.py WeightExporter.send_weights_to_remot

IV. Related Vulnerabilities

Same product: sglang
Same vendor: sgl-project
Same weakness: CWE-187

V. Comments for CVE-2026-112266

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