CVE-2026-110809mediumCWE-404

CVE-2026-110809: medium-severity vulnerability in sgl-project SGLang

sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of service

Published · Updated

33Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 5.3epss 0.3%
exploitation probability
0.3%top 76% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
A security vulnerability has been detected in sgl-project SGLang up to 0.5.19. Affected by this issue is the function Session.create_req of the file python/sglang/srt/session/session_controller.py of the component Session Cleanup. Such manipulation leads to denial of service. The attack may be performed from remote. The exploit has been disclosed publicly and may be used. The pull request to fix this issue awaits acceptance.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
sgl-project · SGLang
public PoCs found — 1
cve_referencegist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec#file-repro_sglang_session_replace_crash-pyunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — sgl-project SGLang

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References
https://gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec#file-repro_sglang_session_replace_crash-pyhttps://github.com/sgl-project/sglang/https://github.com/sgl-project/sglang/issues/41470https://github.com/sgl-project/sglang/pull/41483https://vuldb.com/cve/CVE-2026-110809https://vuldb.com/submit/1004356https://vuldb.com/vuln/420279https://vuldb.com/vuln/420279/cti