CVE-2026-117504

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

State: Published
Severity: 6.9 Medium
Published: Oct 27, 2026
Updated: Oct 27, 2026
Reserved: Oct 27, 2026

Description

A vulnerability was identified in a2aproject a2a-go up to 2.4.0. The affected element is the function Cancel of the file internal/taskexec/distributed_manager.go of the component Distributed Manager. Such manipulation leads to denial of service. It is possible to launch the attack remotely. Upgrading to version 2.5.0 is sufficient to fix this issue. The name of the patch is 14e41a978b31e134ffa1170d8657f9dd98529aa3. Upgrading the affected component is advised.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	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	VulDB
3.1	5.3 Medium	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	VulDB
3.0	5.3 Medium	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	VulDB
2.0	5.0 Medium	AV:N/AC:L/Au:N/C:N/I:N/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-404 Denial of Service

Affected Products

Product	Versions
a2a-goa2aproject	2.0Affected 2.1Affected 2.2Affected 2.3Affected 2.4.0Affected 2.5.0Not affected

References

VDB-427071 | a2aproject a2a-go Distributed Manager distributed_manager.go Cancel denial of servicevdb-entrytechnical-description
VDB-427071 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-117504 | CVE Analysis and Reportthird-party-advisory
Submit #1015053 | a2aproject a2a-go ≤ v2.4.0 CWE-404third-party-advisory
https://github.com/a2aproject/a2a-go/pull/409issue-trackingpatch
https://github.com/a2aproject/a2a-go/commit/14e41a978b31e134ffa1170d8657f9dd98529aa3patch
https://github.com/a2aproject/a2a-go/releases/tag/v2.5.0patch
https://github.com/a2aproject/a2a-go/product

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