Privilege escalation in Openidentityplatform Openam
CVE-2026-123549
OpenAM before 16.1.4 fails to enforce the Valid Creation Attributes list during self-registration, allowing anonymous attackers to set restricted attributes including group membership. Attackers can register through the legacy self-service REST endpoint or User Self-Service flow to join administrative groups and gain full administrative control of OpenAM.
Vulnerability class: Privilege Escalation
Published .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (28.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 28.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-jv8f-m88g-h6mm (vendor-advisory)
- www.vulncheck.com/advisories/openam-before-16.1.4-privilege-escalation-via-self… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-123549?
- CVE-2026-123549 is a critical-severity vulnerability in Openidentityplatform Openam, classified under Improper Privilege Management. CVSS score: 9.8/10. Published 2026-11-08.
- How severe is CVE-2026-123549?
- Critical severity. CVSS v3 base score is 9.8 out of 10.