CVE-2026-117504 Details
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.
A denial-of-service vulnerability has been identified in the a2aproject a2a-go library, specifically in versions prior to 2.4.0. The issue arises in the Distributed Manager component, within the Cancel function of the internal/taskexec/distributed_manager.go file. This vulnerability can be exploited remotely, leading to a denial-of-service condition by causing a resource leak.
Upgrading to version 2.5.0 of the a2aproject a2a-go library addresses this vulnerability. Version 2.5.0 can be downloaded from the GitHub Releases page.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 27, 2026CISA-ADP
Assessed Nov 2, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/a2aproject/a2a-go/ | [email protected] | Vendor |
| https://github.com/a2aproject/a2a-go/commit/14e41a978b31e134ffa1170d8657f9dd98529aa3 | [email protected] | Source CodeVendor |
| https://github.com/a2aproject/a2a-go/pull/409 | [email protected] | Issue TrackingVendor |
| https://github.com/a2aproject/a2a-go/releases/tag/v2.5.0 | [email protected] | Release NotesVendor |
| https://vuldb.com/cve/CVE-2026-117504 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1015053 | [email protected] | Permission Required |
| https://vuldb.com/vuln/427071 | [email protected] | Permission Required |
| https://vuldb.com/vuln/427071/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-404 | Improper Resource Shutdown or Release | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| a2aproject a2a-go | <= 2.4.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 2, 2026 | CVE Modified | CISA-ADP |
| Oct 27, 2026 | New CVE Received | [email protected] |