CVE-2026-45051: OpenAM: Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage

June 24, 2026

Description

A deserialization of untrusted data vulnerability (CWE-502) exists in OpenAM’s WebAuthn authentication module. Under certain conditions, this may allow an attacker to achieve arbitrary code execution in the context of the application server. This affects OpenAM Community Edition through version 16.0.6 and was patched in version 16.1.1.

This is not the default configuration. Exploitation requires that an attacker has previously been able to write attacker-controlled data to a storage attribute read by the WebAuthn module, and that the WebAuthn authentication flow is reachable.

References

github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-6c99-87fr-6q7r
github.com/advisories/GHSA-6c99-87fr-6q7r
nvd.nist.gov/vuln/detail/CVE-2026-45051

Code Behaviors & Features

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