CVE-2026-55772— CedarJava 缓冲区错误漏洞

CedarJava has a type confusion vulnerability

CedarJava is an open source Java implementation of the Cedar policy language, used for fine-grained authorization decisions. In versions prior to 2.3.6, 3.4.1 and 4.9.0, under certain circumstances, improper input handling could allow Record-to-Entity type confusion across the Java-Rust FFI boundary. CedarJava sends authorization requests to the Rust cedar-policy evaluator as JSON. The JSON protocol reserves magic single-key object shapes (__entity and __extn) for entity references and extension values. When serializing a CedarMap, there is no validation preventing these reserved keys from being used. If an integrating service builds a CedarMap from caller-supplied key/value data (such as request headers, user-defined metadata, or resource tags), an actor who controls those keys could cause the Rust evaluator to interpret a record as an entity reference. This issue requires the integrating service to build a CedarMap where the an actor controls the keys, and a policy must reference that value in a when/unless clause. This vulnerability has been fixed in versions 2.3.6, 3.4.1, and 4.9.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

使用不兼容类型访问资源(类型混淆)

CedarJava 缓冲区错误漏洞

Cedar CedarJava是Cedar组织的一款消息队列中间件。 CedarJava存在缓冲区错误漏洞，该漏洞源于输入处理不当，可能导致Java-Rust FFI边界的Record-to-Entity类型混淆。以下版本受到影响：2.3.6之前版本、3.1.2至3.4.1之前版本以及4.0.0至4.9.0之前版本。

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