Medium 4.3Published Oct 26, 2026

CVE-2026-116479a2aproject a2a-java JSON-RPC Error getMessage information exposure

Updated under an hour ago (Oct 28, 2026, 9:50 PM ET)

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Every CVE for a2aproject a2a-java

Exploited in the last 30 days

A flaw has been found in a2aproject a2a-java up to 1.2.0.Final. This impacts the function getMessage of the component JSON-RPC Error Handler. This manipulation causes information exposure through error message. The attack can be initiated remotely. Upgrading to version 1.3.0.Final will fix this issue. Patch name: bbee3369f3825d0fba2373d821f6dc6d4fc82ec0. Upgrading the affected component is advised.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C
Weakness (CWE): CWE-209, CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulDB
NVD analysis: Deferred
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 26, 2026

Affected products

Affected products

a2aproject a2a-java a2aproject:a2a-java	1.2.0.Final; 1.3.0.Final not affected	CNA record

References

References

https://vuldb.com/vuln/426392	vdb-entry, technical-description
https://vuldb.com/vuln/426392/cti	signature, permissions-required
https://vuldb.com/cve/CVE-2026-116479	third-party-advisory
https://vuldb.com/submit/1014889	third-party-advisory
https://github.com/a2aproject/a2a-java/pull/1046	issue-tracking, patch
https://github.com/a2aproject/a2a-java/commit/bbee3369f3825d0fba2373d821f6dc6d4fc82ec0	patch
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final	patch
https://github.com/a2aproject/a2a-java/	product

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.