CVE-2026-110809sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of service
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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
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
- Weakness (CWE)
- CWE-404
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 14, 2026
Affected products
sgl-project SGLang sgl-project:sglang | 0.5.0; 0.5.1; 0.5.2; 0.5.3; 0.5.4; 0.5.5; 0.5.6; 0.5.7; and 12 more ranges | CNA record |
References
- https://vuldb.com/vuln/420279vdb-entry, technical-description
- https://vuldb.com/vuln/420279/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-110809third-party-advisory
- https://vuldb.com/submit/1004356third-party-advisory
- https://github.com/sgl-project/sglang/issues/41470issue-tracking
- https://github.com/sgl-project/sglang/pull/41483issue-tracking, patch
- https://gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec#file-repro_sglang_session_replace_crash-pyexploit
- https://github.com/sgl-project/sglang/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.