CVE-2026-110809: sgl-project SGLang

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

CVSS 5.3 MediumEPSS 0.0032 · 25th percentile

Published by the CVE Program (CNA: VulDB) at 14 Oct 2026, 23:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
sgl-project	SGLang	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 and 8 more

Identifiers

CVE-2026-110809

CNA

VulDB

Weakness (CWE)

CWE-404

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	4.0	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	CNA (VulDB)Used for this record
4.3	Medium	3.1	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	CNA (VulDB)
4.3	Medium	3.0	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	CNA (VulDB)
4.0	Medium	2.0	AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0032, the 25th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 14 Oct 2026. New records show when each source confirmed them.

Sources

References from the CNA

vuldb.com/vuln/420279 vdb-entrytechnical-description
vuldb.com/vuln/420279/cti signaturepermissions-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-trackingpatch
github.com/sgl-project/sglang/ product
gist.github.com/Yunzez/dbd254603fa2bc74358cb3647423d0ec#file-repro_sglang_session_replace_crash-py exploit

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.