What is CVE-2026-123553?

CVE-2026-123553 is a medium-severity vulnerability in Openidentityplatform Openam, classified under CWE-1392. CVSS score: 6.5/10. Published 2026-11-08.

How severe is CVE-2026-123553?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Openidentityplatform Openam

CVE-2026-123553

OpenAM before 16.1.4 ships built-in identities in the Top Level Realm (demo, anonymous, wsc, wsp, SecurityTokenService and agentAuth) with passwords that are identical on every installation, publicly known, and able to authenticate. Unauthenticated remote attackers can log in as these identities to obtain authenticated sessions, and the agent identities can read the configuration of other agent profiles.

Published 2026-11-08.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Openidentityplatform Openam

Weakness classification (CWE)

CWE-1392

References

GitHub Security Advisory (GHSA-hvfc-4v4r-8p9w) (vendor-advisory)
VulnCheck Advisory: OpenAM before 16.1.4 Default Credentials in Built-in Accounts Allow Unauthenticated Login (third-party-advisory)

Frequently asked questions

What is CVE-2026-123553?: CVE-2026-123553 is a medium-severity vulnerability in Openidentityplatform Openam, classified under CWE-1392. CVSS score: 6.5/10. Published 2026-11-08.
How severe is CVE-2026-123553?: Medium severity. CVSS v3 base score is 6.5 out of 10.