Vulnerability in A2aproject A2a-Dotnet
CVE-2026-116476
A weakness has been identified in a2aproject a2a-dotnet up to 1.0.0-preview3. The affected element is the function TaskProjection.ApplyStatus of the component TaskProjection. Executing a manipulation can lead to race condition. The attack may be performed from remote. The pull request to fix this issue awaits acceptance.
Vulnerability class: Race Condition
Published .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- A2aproject A2a-Dotnet — versions 1.0.0-preview3
Weakness classification (CWE)
References
- vuldb.com/vuln/426389 (technical-description, vdb-entry)
- vuldb.com/vuln/426389/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-116476 (third-party-advisory)
- vuldb.com/submit/1014886 (third-party-advisory)
- github.com/a2aproject/a2a-dotnet/pull/453 (issue-tracking, patch)
- github.com/a2aproject/a2a-dotnet/ (product)
Frequently asked questions
- What is CVE-2026-116476?
- CVE-2026-116476 is a medium-severity vulnerability in A2aproject A2a-Dotnet, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.4/10. Published 2026-10-26.
- How severe is CVE-2026-116476?
- Medium severity. CVSS v3 base score is 5.4 out of 10.