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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-110809
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-15 00:16:40 UTC
Updated2026-10-15 00:16:40 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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

Problem Types: CWE-404 | CWE-404 Denial of Service

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
3.0CNADECLARED4.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:C
2.0[email protected]Secondary4AV:N/AC:L/Au:S/C:N/I:N/A:P
2.0CNADECLARED4AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Sgl-project SGLang affected 0.5.0 Not specified
CNA Sgl-project SGLang affected 0.5.1 Not specified
CNA Sgl-project SGLang affected 0.5.2 Not specified
CNA Sgl-project SGLang affected 0.5.3 Not specified
CNA Sgl-project SGLang affected 0.5.4 Not specified
CNA Sgl-project SGLang affected 0.5.5 Not specified
CNA Sgl-project SGLang affected 0.5.6 Not specified
CNA Sgl-project SGLang affected 0.5.7 Not specified
CNA Sgl-project SGLang affected 0.5.8 Not specified
CNA Sgl-project SGLang affected 0.5.9 Not specified
CNA Sgl-project SGLang affected 0.5.10 Not specified
CNA Sgl-project SGLang affected 0.5.11 Not specified
CNA Sgl-project SGLang affected 0.5.12 Not specified
CNA Sgl-project SGLang affected 0.5.13 Not specified
CNA Sgl-project SGLang affected 0.5.14 Not specified
CNA Sgl-project SGLang affected 0.5.15 Not specified
CNA Sgl-project SGLang affected 0.5.16 Not specified
CNA Sgl-project SGLang affected 0.5.17 Not specified
CNA Sgl-project SGLang affected 0.5.18 Not specified
CNA Sgl-project SGLang affected 0.5.19 Not specified

References

ReferenceSourceLinkTags
vuldb.com/vuln/420279 [email protected] vuldb.com
vuldb.com/submit/1004356 [email protected] vuldb.com
vuldb.com/cve/CVE-2026-110809 [email protected] vuldb.com
gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec [email protected] gist.github.com
github.com/sgl-project/sglang/issues/41470 [email protected] github.com
github.com/sgl-project/sglang/pull/41483 [email protected] github.com
vuldb.com/vuln/420279/cti [email protected] vuldb.com
github.com/sgl-project/sglang [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Zyz3366 (VulDB User) (en)

CNA: VulDB CNA Team (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-10-14T00:00:00.000ZAdvisory disclosed
CNA2026-10-14T02:00:00.000ZVulDB entry created
CNA2026-10-14T20:25:53.000ZVulDB entry last update

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