CVE-2026-117504: a2aproject a2a-go

a2aproject a2a-go Distributed Manager distributed_manager.go Cancel denial of service

CVSS 6.9 MediumEPSS 0.0055 · 46th percentile

Published by the CVE Program (CNA: VulDB) at 27 Oct 2026, 14:00 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
a2aproject	a2a-go	affected 2.0 affected 2.1 affected 2.2 affected 2.3 affected 2.4.0 unaffected 2.5.0

Identifiers

CVE-2026-117504

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
6.9	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X	CNA (VulDB)Used for this record
5.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C	CNA (VulDB)
5.3	Medium	3.0	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:X/RL:O/RC:C	CNA (VulDB)
5.0	Medium	2.0	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C	CNA (VulDB)

CISA KEV Not listed.
EPSS 0.0055, the 46th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

27 Oct 2026, 14:00 UTC Confirmed by the CVE List
27 Oct 2026, 14:16 UTC Confirmed by NVD

Sources

References from the CNA

vuldb.com/vuln/427071 vdb-entrytechnical-description
vuldb.com/vuln/427071/cti signaturepermissions-required
vuldb.com/cve/CVE-2026-117504 third-party-advisory
vuldb.com/submit/1015053 third-party-advisory
github.com/a2aproject/a2a-go/pull/409 issue-trackingpatch
github.com/a2aproject/a2a-go/commit/14e41a978b31e134ffa1170d8657f9dd98529aa3 patch
github.com/a2aproject/a2a-go/releases/tag/v2.5.0 patch
github.com/a2aproject/a2a-go/ product

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.