A2A Java SDK has a fail-open default task authorization
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| a2aproject | a2a-java | affected |
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| A2aproject | A2a-java |
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| Source | ID | Title |
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Github GHSA |
GHSA-qw47-mcm5-934w | A2A Java SDK has a fail-open default task authorization |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.604% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
A2aproject
A2aproject a2a-java |
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| Vendors & Products |
A2aproject
A2aproject a2a-java |
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| Metrics |
ssvc
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| Description | A2A Java SDK is the official Java SDK for the Agent2Agent (A2A) Protocol. Prior to 1.3.0.Final, the default InMemoryTaskStore configuration performs no authorization on task reads: the no-argument constructor sets authorizationProvider to null, and InMemoryTaskStore.get(String taskId) returns the stored task without checking the caller or owner. Authorization depends on supplying a TaskAuthorizationProvider and routing requests through AuthorizationRequestHandlerDecorator, whether installed through CDI or explicitly by the application. Default store wiring and manually constructed DefaultRequestHandler.builder().build() handlers, including integrations such as Spring, leave task reads unprotected when no effective authorization-provider and decorator check is installed. In a multi-caller deployment using the default configuration, a caller who knows or guesses another caller's task ID can retrieve the task status, context ID, message history, and artifacts. The default/reference transport endpoints do not enforce authentication, so the task-read disclosure is reachable by an unauthenticated caller rather than requiring a privileged account. This issue is fixed in version 1.3.0.Final. | |
| Title | A2A Java SDK has a fail-open default task authorization | |
| Weaknesses | CWE-1188 CWE-862 |
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| References |
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| Metrics |
cvssV3_1
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