CVE-2026-45051: CWE-502: Deserialization of Untrusted Data in OpenIdentityPlatform OpenAM
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server process. This issue is fixed in version 16.1.1.
CVE-2026-45051: CWE-502: Deserialization of Untrusted Data in OpenIdentityPlatform OpenAM
Description
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, WebAuthnAuthentication loads a serialized AuthenticatorImpl object graph from the configured userAttribute through loadAuthenticators without an ObjectInputFilter. Exploitation requires the WebAuthn flow to be reachable and an attacker to have previously written controlled data to that attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. When those non-default conditions hold, the data is deserialized before assertion verification and can execute a classpath gadget in the application server process. This issue is fixed in version 16.1.1.
CVSS v4.0
Score 9.2critical
Affected software
OpenIdentityPlatform
OpenAM
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-08T18:07:27.342Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa917b955bf5e2cf5a323ee
Added to database: 09/15/2026, 10:02:33 UTC
Last updated: 09/15/2026, 10:02:33 UTC
Views: 1
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