CVE-2026-55771 Details
Description
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.
A vulnerability exists in CedarJava versions prior to 4.9.0, where the EntityIdentifier.equals() method incorrectly handles null and self-references. This flaw leads to erroneous equality comparisons, as the method returns true for null and false for self-references. While this issue does not impact Cedar's authorization decisions, it may affect users who rely on entity identifier equality checks.
Users are advised to upgrade to CedarJava version 4.9.0 or later. For those with forked or derivative code, ensure that it is patched to include the latest fixes.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 13, 2026CISA-ADP
Assessed Jul 14, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/cedar-policy/cedar-java/security/advisories/GHSA-4r9r-4425-74p7 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-697 | Incorrect Comparison | [email protected] |
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | [email protected] |
| CWE-94 | Improper Control of Generation of Code ('Code Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| CedarJava | < 4.9 |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 14, 2026 | CVE Modified | CISA-ADP |
| Jul 13, 2026 | New CVE Received | [email protected] |