---
id: CVE-2026-117507
title: a2aproject a2a-java TaskManager.saveTaskEvent race condition
summary: >-
  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 versio…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-362
vendor: a2aproject
product: a2a-java
affected:
  - a2a-java 1.2.0.Final
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T15:00:21.118Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117507'
references:
  - url: 'https://vuldb.com/vuln/427074'
    label: VDB-427074 | a2aproject a2a-java TaskManager.saveTaskEvent race condition
  - url: 'https://vuldb.com/vuln/427074/cti'
    label: 'VDB-427074 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-117507'
    label: CVE-2026-117507 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1015060'
    label: 'Submit #1015060 | a2aproject a2a-java ≤ 1.2.0.Final CWE-362'
  - url: 'https://github.com/a2aproject/a2a-java/pull/1045'
  - url: >-
      https://github.com/a2aproject/a2a-java/commit/6b8e1e085c35e970ef0048901cd25850e4791ec2
  - url: 'https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final'
  - url: 'https://github.com/a2aproject/a2a-java/'
tags:
  - cve.org
ingestedAt: '2026-10-27T16:11:59.461Z'
---

## Overview

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.

## Affected

- `a2a-java 1.2.0.Final`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.