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CVE-2026-110809
sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of service
Medium5.3EPSS 0.32%
- Published
- Updated
- Reserved
- Assigned by
- VulDB
Description
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| VulDBCNA (assigner) | 4.0 | Medium5.3 | 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 |
| VulDBCNA (assigner) | 3.1 | Medium4.3 | 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 |
| VulDBCNA (assigner) | 3.0 | Medium4.3 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C |
| VulDBCNA (assigner) | 2.0 | Medium4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C |
| NVDNVD · Deferred | 4.0 | Low2.1 | 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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
- EPSS (exploitation in 30 days)
- 0.32% · top 74% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
- affected 0.5.0
- affected 0.5.1
- affected 0.5.2
- affected 0.5.3
- affected 0.5.4
- affected 0.5.5
- affected 0.5.6
- affected 0.5.7
- affected 0.5.8
- affected 0.5.9
- affected 0.5.10
- affected 0.5.11
- affected 0.5.12
- affected 0.5.13
- affected 0.5.14
- affected 0.5.15
- affected 0.5.16
- affected 0.5.17
- affected 0.5.18
- affected 0.5.19
References (8)
- VDB-420279 | sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of service (opens in a new tab)vdb-entrytechnical-description
- VDB-420279 | CTI Indicators (IOB, IOC, TTP, IOA) (opens in a new tab)signaturepermissions-required
- CVE-2026-110809 | CVE Analysis and Report (opens in a new tab)third-party-advisory
- Submit #1004356 | SGLang Project SGLang(SGLang Runtime) 0.5.19 Remote Denial of Service (opens in a new tab)third-party-advisory
- https://github.com/sgl-project/sglang/issues/41470 (opens in a new tab)issue-tracking
- https://github.com/sgl-project/sglang/pull/41483 (opens in a new tab)issue-trackingpatch
- https://gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec#file-repro_sglang_session_replace_crash-py (opens in a new tab)exploit
- https://github.com/sgl-project/sglang/ (opens in a new tab)product
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-110809)Record last updated .