CVE-2026-112266
SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
- State
- Published
- Severity
- 8.2 High
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.2 High | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-187 Partial String Comparison
Affected Products
| Product | Versions |
|---|---|
sglangsgl-project |
|
References
- https://github.com/sgl-project/sglang/issues/45002issue-tracking
- https://github.com/sgl-project/sglang/issues/41474issue-tracking
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590technical-description
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436technical-description
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256technical-description
- VulnCheck Advisory: SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matchingthird-party-advisory
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