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TI-2026-32900 Aliases CVE-2026-45051GHSA-6c99-87fr-6q7r

OpenAM Pre-auth RCE via Java Deserialization in WebAuthn Authenticator Storage

Priority MEDIUM 43CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00688 52nd percentileScored 2026-11-07
Fix Fixed OpenAM (OpenIdentityPlatform): 16.1.1org.openidentityplatform.openam:openam-auth-webauthn (Maven): 16.1.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
OpenIdentityPlatformOpenAMbefore 16.1.116.1.1Patch availableCNA
—org.openidentityplatform.openam:openam-auth-webauthn (Maven)before 16.1.116.1.1Patch availableGHSA-6c99-87fr-6q7r
  • OpenAM VendorOpenIdentityPlatform Affected before 16.1.1 Fixed in 16.1.1 Patch available CNA
  • org.openidentityplatform.openam:openam-auth-webauthn (Maven) Vendor— Affected before 16.1.1 Fixed in 16.1.1 Patch available GHSA-6c99-87fr-6q7r

Remediation

  • Fix · CNA OpenAM (OpenIdentityPlatform) Fixed in 16.1.1
  • Fix · GHSA-6c99-87fr-6q7r org.openidentityplatform.openam:openam-auth-webauthn (Maven) Fixed in 16.1.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45051
  2. 2026-10-03 Alias added: GHSA-6c99-87fr-6q7r
  3. 2026-10-28 3 new references · GHSA-6c99-87fr-6q7r

References

Advisory 1

Other 4

  • TI-2025-20332 OpenDJ Denial of Service (Dos) using alias loop CVSS 4.0HIGH 8.7
  • TI-2026-25836 Pre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAM CVSS 4.0CRITICAL 9.3
  • TI-2026-86693 Session token disclosure in OpenAM notification WebSocket CVSS 4.0CRITICAL 10.0
  • TI-2026-86692 Authentication bypass in OpenAM SAML login accepts unsigned assertions CVSS 4.0CRITICAL 9.3
  • TI-2026-86691 Privilege escalation in OpenAM via self-registration attribute bypass CVSS 4.0CRITICAL 9.3
  • TI-2026-86685 Unbounded Java deserialization in OpenAM enables denial of service CVSS 4.0HIGH 8.7
See all 54 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences