CVSS 4.0
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, само при определена конфигурация или състояние на системата, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
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.
Засегнати продукти
- a2aproject a2a-java: < 1.3.0.Final
Вид слабост
История
- 20 октомври 2026 Публикувано
Други уязвимости в a2aproject a2a-java
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-111763
- https://nvd.nist.gov/vuln/detail/CVE-2026-111763
- https://github.com/a2aproject/a2a-java/security/advisories/GHSA-9rhm-2h4x-jwmx
- https://github.com/a2aproject/a2a-java/security/advisories/GHSA-4fpj-g9jf-9rgg
- https://github.com/a2aproject/a2a-java/pull/1097
- https://github.com/a2aproject/a2a-java/commit/2a36530d75e11bcf9b81f543464dbe193ca6478e
- https://github.com/a2aproject/a2a-java/releases/tag/v1.3.0.Final