Open Access Management (OpenAM) is an access management solution. (CVE-2026-45051)
Open Access Management (OpenAM) prior to version 16.1.1 contains a deserialization vulnerability in its WebAuthnAuthentication component. The vulnerability arises because a serialized AuthenticatorImpl object graph is loaded from a user attribute without an ObjectInputFilter, allowing potential execution of malicious code if an attacker can write controlled data to that attribute. Exploitation requires the WebAuthn flow to be reachable and prior ability to write to the attribute via delegated administration or other means. This issue is fixed in version 16.1.1.
AI Analysis
Technical Summary
CVE-2026-45051 affects OpenAM versions before 16.1.1. The vulnerability involves unsafe deserialization of a serialized AuthenticatorImpl object graph loaded from a configured user attribute during the WebAuthnAuthentication process. Without an ObjectInputFilter, this deserialization can lead to execution of a classpath gadget in the application server process. Exploitation requires the WebAuthn flow to be accessible and an attacker to have previously injected controlled serialized data into the user attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. The vulnerability is resolved in OpenAM version 16.1.1.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code within the application server process by leveraging unsafe deserialization of attacker-controlled data. This can lead to compromise of the server hosting OpenAM. However, exploitation requires multiple preconditions, including access to write controlled serialized data to a user attribute and reachability of the WebAuthn flow.
Mitigation Recommendations
Upgrade OpenAM to version 16.1.1 or later, where this vulnerability is fixed by implementing proper deserialization filtering. Until upgrade, restrict access to delegated administration, provisioning, directory access, and legacy REST self-registration features to trusted users only to prevent injection of malicious serialized data. Review and harden configurations to minimize exposure of the WebAuthn flow.
Open Access Management (OpenAM) is an access management solution. (CVE-2026-45051)
Description
Open Access Management (OpenAM) prior to version 16.1.1 contains a deserialization vulnerability in its WebAuthnAuthentication component. The vulnerability arises because a serialized AuthenticatorImpl object graph is loaded from a user attribute without an ObjectInputFilter, allowing potential execution of malicious code if an attacker can write controlled data to that attribute. Exploitation requires the WebAuthn flow to be reachable and prior ability to write to the attribute via delegated administration or other means. This issue is fixed in version 16.1.1.
CVSS v4.0
Affected software
pkg:deb/ubuntu/openam?arch=source&distro=xenialRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45051 affects OpenAM versions before 16.1.1. The vulnerability involves unsafe deserialization of a serialized AuthenticatorImpl object graph loaded from a configured user attribute during the WebAuthnAuthentication process. Without an ObjectInputFilter, this deserialization can lead to execution of a classpath gadget in the application server process. Exploitation requires the WebAuthn flow to be accessible and an attacker to have previously injected controlled serialized data into the user attribute through delegated administration, provisioning, directory access, legacy REST self-registration, or unsafe configuration. The vulnerability is resolved in OpenAM version 16.1.1.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code within the application server process by leveraging unsafe deserialization of attacker-controlled data. This can lead to compromise of the server hosting OpenAM. However, exploitation requires multiple preconditions, including access to write controlled serialized data to a user attribute and reachability of the WebAuthn flow.
Mitigation Recommendations
Upgrade OpenAM to version 16.1.1 or later, where this vulnerability is fixed by implementing proper deserialization filtering. Until upgrade, restrict access to delegated administration, provisioning, directory access, and legacy REST self-registration features to trusted users only to prevent injection of malicious serialized data. Review and harden configurations to minimize exposure of the WebAuthn flow.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- UBUNTU-CVE-2026-45051
- Osv Schema Version
- 1.7.0
- Ecosystems
- ["Ubuntu:16.04:LTS"]
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab4be69f7a7c54106f0d422
Added to database: 09/24/2026, 06:08:41 UTC
Last enriched: 09/24/2026, 06:52:24 UTC
Last updated: 09/25/2026, 01:47:42 UTC
Views: 3
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