CVE-2026-116479: Information Disclosure (CVSS 4.3)

Description

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.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0032

Probability of exploitation

0.24%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-200 CWE-200

CWE-209 CWE-209

References

Other References

https://github.com/a2aproject/a2a-java/ https://github.com/a2aproject/a2a-java/commit/bbee3369f3825d0fba2373d821f6dc6d4fc82ec0 https://github.com/a2aproject/a2a-java/pull/1046 https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final https://vuldb.com/cve/CVE-2026-116479 https://vuldb.com/submit/1014889 https://vuldb.com/vuln/426392 https://vuldb.com/vuln/426392/cti

Frequently Asked Questions

What is CVE-2026-116479? +

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. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-116479? +

CVE-2026-116479 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0032, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-116479? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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