---
id: "CVE-2026-112266"
kind: "vulnerability"
aliases: ["CVE-2026-112266"]
title: "SGLang: short client request IDs let one client abort others' generations"
severity: "high"
cvss: 8.2
epss: null
exploited: false
status: "open"
category: "ai-tooling"
products: []
ecosystems: []
tags: ["ai-tooling", "llm-inference", "self-hosted", "sglang"]
not_affected_if: ["no-untrusted-clients", "single-tenant"]
published_at: "2026-10-19T14:17:03+00:00"
first_seen_at: "2026-10-23T21:57:18+00:00"
updated_at: "2026-10-25T03:04:17+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-112266", "first_seen_at": "2026-10-23T21:57:18+00:00"}]
---

# SGLang: short client request IDs let one client abort others' generations

SGLang through 0.5.22 matches client-supplied request IDs by prefix, so a short rid can match and abort other users' in-flight generation requests. An attacker can disconnect other clients' streaming /generate requests, causing denial of service.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-23T21:57:18+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-112266

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_