CVE-2026-62263
OpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypass
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.2, WebAuthnAuthentication.deserialize applies an ObjectInputFilter that allows every serialized object at depth greater than 1 and therefore constrains only an AuthenticatorImpl root object. A pre-authentication attacker can supply a userHandle whose serialized graph has a valid AuthenticatorImpl root and a nested gadget class, causing readObject or readResolve execution before the cast and assertion verification when a usable gadget is on the classpath. This bypasses the incomplete remediation for the earlier WebAuthn deserialization vulnerability. This issue is fixed in version 16.1.2.
| CWE | CWE-502 |
| Vendor | openidentityplatform |
| Product | openam |
| Published | Sep 15, 2026 |
| Last Updated | Sep 15, 2026 |
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