Resource exhaustion in A2aproject A2a-Java
CVE-2026-117505
A security flaw has been discovered in a2aproject a2a-java up to 1.2.0.Final. The impacted element is the function queue.offer of the component ChildQueue. Performing a manipulation results in resource consumption. The attack can be initiated remotely. Upgrading to version 1.3.0.Final is sufficient to resolve this issue. The patch is named be663f806efcfdddd2805d214fae4998379ac5f2. It is advisable to upgrade the affected component.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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-Java — versions 1.2.0.Final
Weakness classification (CWE)
References
- vuldb.com/vuln/427072 (technical-description, vdb-entry)
- vuldb.com/vuln/427072/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-117505 (third-party-advisory)
- vuldb.com/submit/1015054 (third-party-advisory)
- github.com/a2aproject/a2a-java/pull/1040 (issue-tracking, patch)
- github.com/a2aproject/a2a-java/commit/be663f806efcfdddd2805d214fae4998379ac5f2 (patch)
- github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final (patch)
- github.com/a2aproject/a2a-java/ (product)
Frequently asked questions
- What is CVE-2026-117505?
- CVE-2026-117505 is a medium-severity vulnerability in A2aproject A2a-Java, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2026-10-27.
- How severe is CVE-2026-117505?
- Medium severity. CVSS v3 base score is 4.3 out of 10.