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SCA: security update for org.a2aproject.sdk:a2a-java-sdk-parent (GHSA-9rhm-2h4x-jwmx)

medium Tenable Cloud Security Plugin ID 476399

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - A2A Java SDK is the official Java SDK for the Agent2Agent (A2A) Protocol. Prior to 1.3.0.Final, a
 malicious or compromised remote agent can cause the default JDK-based client to forward a configured API
 key to a third-party server. When a client application configures credentials through `CredentialService`,
 `AuthInterceptor.intercept` in `client/transport/spi/src/main/java/org/a2aproject/sdk/client/transport/spi
 /interceptors/auth/AuthInterceptor.java` uses `APIKeySecurityScheme.name()` from the remote AgentCard
 directly as the HTTP header name containing the credential, without checking that the declared location is
 HEADER. JdkA2AHttpClient uses followRedirects(NORMAL), so an agent-controlled cross-origin redirect
 forwards the custom credential-bearing header even when the standard Authorization header is stripped. The
 attack requires configured API key credentials for the agent's security scheme and control of the agent's
 AgentCard and redirect response, but no additional client privileges. This issue is fixed in version
 1.3.0.Final. (CVE-2026-111763)

Solution

Update the org.a2aproject.sdk:a2a-java-sdk-parent library and its related packages to version 1.3.0.Final or later.

See Also

https://github.com/advisories/GHSA-9rhm-2h4x-jwmx

Plugin Details

Severity: Medium

ID: 476399

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/21/2026

Updated: 10/21/2026

Risk Information

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-111763

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Medium

Base Score: 5.7

Threat Score: 1.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/20/2026

Vulnerability Publication Date: 10/20/2026

Reference Information

CVE: CVE-2026-111763

cwe: CWE-522