Answer in brief
CVE-2026-55771 records a High severity (CVSS 8.8) rce vulnerability in Cedar-Java has policy injection, type confusion, and incorrect equality comparison vulnerabilities. The source record does not mark it as known exploited. 3 affected packages are mapped in the feed.
Answer in brief
CVE-2026-55771 records a High severity (CVSS 8.8) rce vulnerability in Cedar-Java has policy injection, type confusion, and incorrect equality comparison vulnerabilities. The source record does not mark it as known exploited. 3 affected packages are mapped in the feed.
Update com.cedarpolicy:cedar-java to 2.3.6; com.cedarpolicy:cedar-java to 3.4.1; com.cedarpolicy:cedar-java to 4.9.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanRCE describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-55771 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| com.cedarpolicy:cedar-javamaven | <2.3.6 | 2.3.6 |
| com.cedarpolicy:cedar-javamaven | >=3.1.2,<3.4.1 | 3.4.1 |
| com.cedarpolicy:cedar-javamaven | >=4.0.0,<4.9.0 | 4.9.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
### Summary CedarJava is an open source Java implementation of the Cedar policy language, used for fine-grained authorization decisions. Under certain circumstances, it could lead to incorrect equality comparisons. ### Impact **`EntityIdentifier.equals()` has inverted null/self branches** 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. ### Impacted versions: < 4.9 ### Patches It has been addressed in CedarJava version 4.9 and above. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. ### Workarounds Avoid relying on `EntityIdentifier.equals()` for security-sensitive comparisons until upgraded to version `4.9`. ### References If you have any questions or comments about this advisory, Cedar asks that you contact us directly via email to [[email protected]](mailto:[email protected]). Please do not create a public GitHub issue.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-55771 records a High severity (CVSS 8.8) rce vulnerability in Cedar-Java has policy injection, type confusion, and incorrect equality comparison vulnerabilities. The source record does not mark it as known exploited. 3 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for com.cedarpolicy:cedar-java, com.cedarpolicy:cedar-java, com.cedarpolicy:cedar-java.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL GuardUpdate com.cedarpolicy:cedar-java to 2.3.6; com.cedarpolicy:cedar-java to 3.4.1; com.cedarpolicy:cedar-java to 4.9.0 if you use the affected versions. Test the change in a non-production environment first.
Local check
hol-guard supply-chain scanRCE describes the vulnerability class recorded for this advisory. The current record does not mark CVE-2026-55771 as known exploited; continue to monitor the source for status changes. The feed includes package mappings that can be checked against lockfiles and deployed manifests.
| Package | Affected range | Fixed version |
|---|---|---|
| com.cedarpolicy:cedar-javamaven | <2.3.6 | 2.3.6 |
| com.cedarpolicy:cedar-javamaven | >=3.1.2,<3.4.1 | 3.4.1 |
| com.cedarpolicy:cedar-javamaven | >=4.0.0,<4.9.0 | 4.9.0 |
Fixed versions are reported by the source feed; confirm compatibility before updating.
### Summary CedarJava is an open source Java implementation of the Cedar policy language, used for fine-grained authorization decisions. Under certain circumstances, it could lead to incorrect equality comparisons. ### Impact **`EntityIdentifier.equals()` has inverted null/self branches** 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. ### Impacted versions: < 4.9 ### Patches It has been addressed in CedarJava version 4.9 and above. We recommend upgrading to the latest version and ensuring any forked or derivative code is patched to incorporate the new fixes. ### Workarounds Avoid relying on `EntityIdentifier.equals()` for security-sensitive comparisons until upgraded to version `4.9`. ### References If you have any questions or comments about this advisory, Cedar asks that you contact us directly via email to [[email protected]](mailto:[email protected]). Please do not create a public GitHub issue.
Reported by GitHub Security Advisories (ghsa).
CVE-2026-55771 records a High severity (CVSS 8.8) rce vulnerability in Cedar-Java has policy injection, type confusion, and incorrect equality comparison vulnerabilities. The source record does not mark it as known exploited. 3 affected packages are mapped in the feed.
The source record does not mark it as known exploited.
Check lockfiles and deployed manifests for com.cedarpolicy:cedar-java, com.cedarpolicy:cedar-java, com.cedarpolicy:cedar-java.
HOL Guard can help your team review package activity against supported protection paths.
Explore HOL Guard