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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00324.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
sgl-project SGLang affected
Version Status Constraints
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 affected —

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No data.

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Project Subscriptions

Vendors Products
Sgl-project Subscribe
Sglang Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Wed, 14 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
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.
Title sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of service
First Time appeared Sgl-project
Sgl-project sglang
Weaknesses CWE-404
CPEs cpe:2.3:a:sgl-project:sglang:*:*:*:*:*:*:*:*
Vendors & Products Sgl-project
Sgl-project sglang
References
Metrics cvssV2_0

{'score': 4, 'vector': 'AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 4.3, 'vector': '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'}

cvssV3_1

{'score': 4.3, 'vector': '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'}

cvssV4_0

{'score': 5.3, 'vector': '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-10-15T15:04:33.724Z

Reserved: 2026-10-14T18:20:40.526Z

Link: CVE-2026-110809

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-15T00:16:40.150

Modified: 2026-10-15T16:17:46.730

Link: CVE-2026-110809

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-15T12:00:18Z

Weaknesses