CVE-2026-123550Critical· 9.8▾ MidnightOpenAM 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 remo…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 53.9 · likelihood 0 · exploitation 0
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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.
OpenAM < 16.1.4OpenAM < 16.1.4Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-123537Medium· 5.0OpenAM before 16.1.4 SSRF via UMA Scope Description URLs
CVE-2026-123536Medium· 4.1OpenAM before 16.1.4 SSRF via Federation Configuration Wizard Metadata URLs
CVE-2026-123538Medium· 6.6OpenAM before 16.1.4 SAML 1.x Signature Verification Issuer Impersonation
CVE-2026-123539Medium· 4.8OpenAM before 16.1.4 Stored XSS via OAuth 2.0 Consent Page Display Name
CVE-2026-123541Medium· 4.7OpenAM before 16.1.4 Open Redirect via SAML 1.x Trusted-Partner Matching
CVE-2026-123540Low· 2.0OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST