Vulnerability · Published Oct 19, 2026 · Assigned by VulnCheck
CVE-2026-112266SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
Medium 5.9
In plain English
A medium-severity security flaw in sglang from sgl-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.4%top 63.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| sgl-project | sglang | 0 – through 0.5.22 |
Weakness: CWE-187 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/sgl-project/sglang/issues/45002 issue-tracking
- https://github.com/sgl-project/sglang/issues/41474 issue-tracking
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590 technical-description
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436 technical-description
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256 technical-description
- VulnCheck Advisory: SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching third-party-advisory