Resource exhaustion in A2aproject A2a-Java
CVE-2026-117506
A weakness has been identified in a2aproject a2a-java up to 1.2.0.Final. This affects the function InMemoryPushNotificationConfigStore.setInfo of the file extras/push-notification-config-store-database-jpa/src/main/java/org/a2aproject/sdk/extras/pushnotificationconfigstore/database/jpa/JpaDatabasePushNotificationConfigStore.java of the component Push Notification Config Store. Executing a manipulation can lead to resource consumption. The attack can be launched remotely. Upgrading to version 1.3.0.Final mitigates this issue. This patch is called b478810a03b4a16841d36aca5c6e87d8f48fce67. You should 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/427073 (technical-description, vdb-entry)
- vuldb.com/vuln/427073/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-117506 (third-party-advisory)
- vuldb.com/submit/1015055 (third-party-advisory)
- github.com/a2aproject/a2a-java/pull/1044 (issue-tracking, patch)
- github.com/a2aproject/a2a-java/commit/b478810a03b4a16841d36aca5c6e87d8f48fce67 (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-2026-117506?
- CVE-2026-117506 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-2026-117506?
- Medium severity. CVSS v3 base score is 4.3 out of 10.