CVE-2026-123550: critical vulnerability in OpenIdentityPlatform OpenAM
OpenAM before 16.1.4 SAML Authentication Bypass via Unsigned Assertions
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
25Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3
OpenAM before 16.1.4 contains an authentication bypass vulnerability in its SAML v2.0 service provider that accepts unsigned assertions on the ECP (PAOS) and HTTP-Artifact bindings when WantAssertionsSigned is false. Unauthenticated remote attackers can submit forged assertions to obtain sessions as any mapped user, including administrators, and hijack single sign-on to dependent applications.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
OpenIdentityPlatform · OpenAMRelated CVEs — OpenIdentityPlatform OpenAM
In the same product, most dangerous first.
CVE-2026-33439CRITICALPre-Authentication Remote Code Execution via `jato.clientSession` Deserialization in OpenAMEPSS 9.3%CVE-2024-41667HIGHOpenAM FreeMarker template injectionEPSS 3.5%CVE-2023-37471CRITICALUser impersonation using SAMLv1.x SSO in Open Access Management EPSS 1.3%CVE-2026-62379CRITICALOpenAM: Unauthenticated Remote Code Execution via Class.forName in AuthXMLUtils.createCustomCallbackEPSS 1.1%CVE-2026-46619CRITICALOpenAM Authentication Bypass via MSISDN LDAP InjectionEPSS 1.0%CVE-2026-62263CRITICALOpenAM: WebAuthn Java deserialization RCE via ObjectInputFilter depth>1 bypassEPSS 0.9%