UBUNTU-CVE-2026-45051

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Source
https://ubuntu.com/security/CVE-2026-45051
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45051.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45051
Upstream
Published
2026-09-15T10:17:00Z
Modified
2026-09-24T02:00:15Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS / openam

Package

Name
openam
Purl
pkg:deb/ubuntu/openam?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.0-1build6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openam",
            "binary_version": "1.4.0-1build6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45051.json"