---
id: CVE-2026-112266
title: SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
summary: >-
  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
  wi…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-187
vendor: sgl-project
product: sglang
affected:
  - sglang <= 0.5.22
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-19T14:21:16.166551Z'
exploitAvailable: true
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T14:21:40.361Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112266'
references:
  - url: 'https://github.com/sgl-project/sglang/issues/45002'
  - url: 'https://github.com/sgl-project/sglang/issues/41474'
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436
  - url: >-
      https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256
  - url: >-
      https://www.vulncheck.com/advisories/sglang-through-0.5.22-cross-request-abort-via-rid-prefix-matching
    label: >-
      VulnCheck Advisory: SGLang through 0.5.22 Cross-Request Abort via rid
      Prefix Matching
tags:
  - cve.org
  - exploit-available
ingestedAt: '2026-10-19T14:30:01.062Z'
---

## Overview

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.

## Affected

- `sglang <= 0.5.22`

## Remediation

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