Medium severity · published Oct 26, 2026
CVE-2026-116479
a2aproject a2a-java JSON-RPC Error getMessage information exposure
New
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
A2
a2a-java · a2aproject
1.2.0.Final · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116479
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116479
github.com
https://github.com/a2aproject/a2a-java/
github.com
https://github.com/a2aproject/a2a-java/commit/bbee3369f3825d0fba2373d821f6dc6d4fc82ec0
github.com
https://github.com/a2aproject/a2a-java/pull/1046
github.com
https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final
vuldb.com
https://vuldb.com/cve/CVE-2026-116479
vuldb.com
https://vuldb.com/submit/1014889
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