a2aproject a2a-java up to 1.2.0.Final JSON-RPC Error getMessage information exposure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k2.47-

Summaryinfo

A vulnerability categorized as problematic has been discovered in a2aproject a2a-java up to 1.2.0.Final. Affected is the function getMessage of the component JSON-RPC Error Handler. Such manipulation leads to information exposure. This vulnerability is uniquely identified as CVE-2026-116479. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in a2aproject a2a-java up to 1.2.0.Final. It has been rated as problematic. Affected by this issue is the function getMessage of the component JSON-RPC Error Handler. The manipulation with an unknown input leads to a information exposure vulnerability. Using CWE to declare the problem leads to CWE-209. The product generates an error message that includes sensitive information about its environment, users, or associated data. Impacted is confidentiality.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-116479. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 1.3.0.Final eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch bbee3369f3825d0fba2373d821f6dc6d4fc82ec0 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Information exposure
CWE: CWE-209 / CWE-200 / CWE-284
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: a2a-java 1.3.0.Final
Patch: bbee3369f3825d0fba2373d821f6dc6d4fc82ec0

Timelineinfo

10/26/2026 Advisory disclosed
10/26/2026 +0 days VulDB entry created
10/26/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 1046
Status: Confirmed

CVE: CVE-2026-116479 (🔒)
GCVE (CVE): GCVE-0-2026-116479
GCVE (VulDB): GCVE-100-426392

Entryinfo

Created: 10/26/2026 12:05
Changes: 10/26/2026 12:05 (59)
Complete: 🔍
Submitter: colorfullbz
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #1014889: a2aproject a2a-java ≤ v1.2.0.Final CWE-209 (by colorfullbz)

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