Vulnerability in Sgl-Project Sglang
CVE-2026-110809
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Sgl-Project Sglang — versions 0.5.0, 0.5.1, 0.5.10
Weakness classification (CWE)
References
- vuldb.com/vuln/420279 (technical-description, vdb-entry)
- vuldb.com/vuln/420279/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-110809 (third-party-advisory)
- vuldb.com/submit/1004356 (third-party-advisory)
- github.com/sgl-project/sglang/issues/41470 (issue-tracking)
- github.com/sgl-project/sglang/pull/41483 (issue-tracking, patch)
- gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec (exploit)
- github.com/sgl-project/sglang/ (product)
Frequently asked questions
- What is CVE-2026-110809?
- CVE-2026-110809 is a medium-severity vulnerability in Sgl-Project Sglang, classified under Improper Resource Shutdown or Release. CVSS score: 4.3/10. Published 2026-10-15.
- How severe is CVE-2026-110809?
- Medium severity. CVSS v3 base score is 4.3 out of 10.