Vulnerability Description
Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the `RADIUS` authentication module opens an unconnected datagram socket and trusts the first UDP datagram received on the client source port. The receive path does not verify the source IP and port, match the response identifier to the outstanding request, or verify the RFC 2865 `Response Authenticator`; the RFC 2869 `Message-Authenticator` is neither sent nor required. Any non-Reject/non-Challenge packet is treated as success. On a deployment with a `RADIUS` module instance enabled on a login chain, an unauthenticated network attacker can race the real server on-path or spray forged `Access-Accept` packets off-path and obtain a session for any `RADIUS`-mapped username without knowing the shared secret. Unlike CVE-2024-3596, exploitation requires no MD5 chosen-prefix forgery because no response authenticator is checked. The resulting session carries the impersonated principal's privileges. This issue is fixed in version 16.1.1.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/OpenIdentityPlatform/OpenAM/commit/5a0c10eccd1d45aaeb5575bbe7
- https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1
- https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-386j-6m8
FAQ
What is CVE-2026-46560?
CVE-2026-46560 is a vulnerability with a CVSS score of 7.5 (HIGH). Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, the `RADIUS` authentication module opens an unconnected datagram socket and trusts the first UDP datagram received on...
How severe is CVE-2026-46560?
CVE-2026-46560 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-46560?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.