CVE-2026-117507 Details
Description
A security vulnerability has been detected in a2aproject a2a-java up to 1.2.0.Final. This impacts the function TaskManager.saveTaskEvent. The manipulation leads to race condition. The attack may be initiated remotely. Upgrading to version 1.3.0.Final will fix this issue. The identifier of the patch is 6b8e1e085c35e970ef0048901cd25850e4791ec2. The affected component should be upgraded.
A race condition vulnerability has been identified in the a2aproject a2a-java library, affecting versions prior to 1.2.0.Final. The issue arises in the TaskManager.saveTaskEvent function, where improper handling of task state transitions can lead to concurrent modifications. This vulnerability can be exploited remotely, allowing for unauthorized manipulation of task events.
Upgrade to a2aproject a2a-java version 1.3.0.Final or later, where this vulnerability has been fixed.
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-java/ | [email protected] | ProductVendor |
| https://github.com/a2aproject/a2a-java/commit/6b8e1e085c35e970ef0048901cd25850e4791ec2 | [email protected] | Source CodeVendor |
| https://github.com/a2aproject/a2a-java/pull/1045 | [email protected] | Issue TrackingVendor |
| https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final | [email protected] | Release NotesVendor |
| https://vuldb.com/cve/CVE-2026-117507 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/1015060 | [email protected] | Issue TrackingPermission Required |
| https://vuldb.com/vuln/427074 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/vuln/427074/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-362 | Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| a2aproject a2a-java | <= 1.2.0.Final |
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] |