CVE-2026-62379 OpenIdentityPlatform CVE debrief

Who should care

Defenders responsible for OpenAM deployments should assess exposure and prioritize patching to version 16.1.2 or later. This includes operators, platform administrators, vulnerability management teams, and security teams who need to ensure that OpenAM instances are updated to prevent code execution and potential unauthorized access.

Why it matters

CVE-2026-62379 is a critical pre-authentication code execution vulnerability in Open Access Management (OpenAM). Defenders should prioritize patching to version 16.1.2 or later to prevent code execution and potential unauthorized access.

• Code execution in the server process
• Potential for unauthorized access and data breaches
• Need for patching and version verification
• Possible impact on authentication and authorization mechanisms

Technical summary

The pre-authentication /authservice PLL endpoint in Open Access Management (OpenAM) accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. This allows attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code in the server process.

Defensive priority

Defenders should prioritize patching OpenAM instances to version 16.1.2 or later to prevent code execution.

Recommended defensive actions

• Patch OpenAM instances to version 16.1.2 or later
• Review and restrict access to the /authservice PLL endpoint
• Monitor for suspicious activity on OpenAM servers
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its critical CVSS score of 9.8 and the fixed version 16.1.2. The pre-authentication /authservice PLL endpoint in Open Access Management (OpenAM) accepts a CustomCallback XML element whose className value selects an arbitrary Java class for AuthXMLUtils to load and instantiate without verifying that it implements DSAMECallbackInterface. This allows attacker-controlled class initialization and unsafe deserialization of a serialized Subject value to execute code

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.