CVE-2026-112266CWE-187

CVE-2026-112266

Medium · published October 19, 2026

CVSS v3.1
5.9
EPSS
0%
Percentile
35.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.2 · 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
EPSS
0.00421 · 35.4th percentile
Weakness
CWE-187 · Partial String Comparison
Published
2026-10-19T18:17Z
References (7)
https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590 · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256 · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436 · [email protected]https://github.com/sgl-project/sglang/issues/41474 · [email protected]https://github.com/sgl-project/sglang/issues/45002 · [email protected]https://www.vulncheck.com/advisories/sglang-through-0.5.22-cross-request-abort-via-rid-prefix-matching · [email protected]https://github.com/sgl-project/sglang/issues/41474 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 13:55Z
    SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
    cvelistv5
  • 19 OCT 13:55Z
    SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
    cvelistv5