CVE-2026-55771

CedarJava is an open source Java implementation of the Cedar policy language, used for fine-grained authorization decisions. In versions prior to 4.9.0, the EntityIdentifier.equals() has inverted null/self branches which could lead to incorrect equality comparisons. The EntityIdentifier.equals() method has inverted logic for null and self-reference checks, returning true for null comparisons and false for self-comparisons. This does not affect Cedar authorization decisions (computed in Rust from JSON), but could affect integrators who perform their own equality checks on entity identifiers. This issue has been fixed in version 4.9.0.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/cedar-policy/cedar-java/security/advisories/GHSA-4r9r-4425-74p7

Configurations

No configuration.

History

24 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) CedarJava es una implementación Java de código abierto del lenguaje de políticas Cedar, utilizada para decisiones de autorización de grano fino. En versiones anteriores a la 4.9.0, el método EntityIdentifier.equals() tiene ramas nulas/de autorreferencia invertidas, lo que podría llevar a comparaciones de igualdad incorrectas. El método EntityIdentifier.equals() tiene lógica invertida para las comprobaciones de nulo y de autorreferencia, devolviendo verdadero para comparaciones nulas y falso para comparaciones de autorreferencia. Esto no afecta las decisiones de autorización de Cedar (calculadas en Rust a partir de JSON), pero podría afectar a los integradores que realizan sus propias comprobaciones de igualdad en los identificadores de entidad. Este problema ha sido solucionado en la versión 4.9.0.

Information

Published : 2026-07-13 20:16

Updated : 2026-10-24 22:10

NVD link : CVE-2026-55771

Mitre link : CVE-2026-55771

CVE.ORG link : CVE-2026-55771

JSON object : View

Products Affected

No product.

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-697

Incorrect Comparison

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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