CVE-2026-117507

a2aproject a2a-java TaskManager.saveTaskEvent race condition

State: Published
Severity: 5.3 Medium
Published: Oct 27, 2026
Updated: Oct 27, 2026
Reserved: Oct 27, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	5.4 Medium	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	VulDB
3.0	5.4 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	5.5 Medium	AV:N/AC:L/Au:S/C:N/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-362 Race Condition

Affected Products

Product	Versions
a2a-javaa2aproject	1.2.0.FinalAffected 1.3.0.FinalNot affected

References

VDB-427074 | a2aproject a2a-java TaskManager.saveTaskEvent race conditionvdb-entrytechnical-description
VDB-427074 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-117507 | CVE Analysis and Reportthird-party-advisory
Submit #1015060 | a2aproject a2a-java ≤ 1.2.0.Final CWE-362third-party-advisory
https://github.com/a2aproject/a2a-java/pull/1045issue-trackingpatch
https://github.com/a2aproject/a2a-java/commit/6b8e1e085c35e970ef0048901cd25850e4791ec2patch
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Finalpatch
https://github.com/a2aproject/a2a-java/product

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