MinorCritical vulnerability

CVE-2026-123538 (CVSS 7.5)

NVD · officialPublished Nov 8, 2026Risk 23/100EPSS 0.1%

OpenAM before 16.1.4 does not verify that a signed SAML 1.x assertion or response was signed by the partner named as its issuer, accepting a signature from any certificate in OpenAM's keystore. An attacker holding such a private key, such as a trusted SAML 1.x partner, can forge assertions claiming another partner's issuer and sign in as that partner's users, including privileged ones.

Technical details

CVSS

7.5

AV:NetworkAC:HighPR:HighUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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