Medium severity · published Oct 19, 2026
CVE-2026-112266
SGLang through 0.5.22 Cross-Request Abort via rid Prefix Matching
5.9
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SG
sglang · sgl-project
through 0.5.22 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-112266
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-112266
github.com
https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/scheduler.py#L5458-L5590
github.com
https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2240-L2256
github.com
https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/managers/tokenizer_manager.py#L2425-L2436
github.com
https://github.com/sgl-project/sglang/issues/41474
github.com
https://github.com/sgl-project/sglang/issues/45002
www.vulncheck.com
https://www.vulncheck.com/advisories/sglang-through-0.5.22-cross-request-abort-via-rid-prefix-matching
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