Vulnerability in A2aproject A2a-Rs
CVE-2026-113707
A security flaw has been discovered in a2aproject a2a-rs up to 0.4.4. The affected element is the function InMemoryTaskStore::update of the file a2a-server/src/task_store/inmemory.rs. The manipulation results in race condition. The attack may be performed from remote. The patch is identified as 7050c7d329238539424ee46440e23b91c4825bee. It is advisable to implement a patch to correct this issue.
Vulnerability class: Race Condition
Published · last modified .
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-Rs — versions 0.4.0, 0.4.1, 0.4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/422869 (technical-description, vdb-entry)
- vuldb.com/vuln/422869/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-113707 (third-party-advisory)
- vuldb.com/submit/1015056 (third-party-advisory)
- github.com/a2aproject/a2a-rs/pull/126 (issue-tracking, patch)
- github.com/a2aproject/a2a-rs/commit/7050c7d329238539424ee46440e23b91c4825bee (patch)
- github.com/a2aproject/a2a-rs/ (product)
Frequently asked questions
- What is CVE-2026-113707?
- CVE-2026-113707 is a medium-severity vulnerability in A2aproject A2a-Rs, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 5.4/10. Published 2026-10-21.
- How severe is CVE-2026-113707?
- Medium severity. CVSS v3 base score is 5.4 out of 10.