PT-2026-55411

Summary SimpleSAMLphp's SAML SP ACS path does not enforce the IdP selected for an SP-initiated login. If a saved SP state contains ExpectedIssuer = IdP A, but the ACS receives a valid response from IdP B, the code logs a warning and continues processing instead of rejecting the response. That...

PT-2026-55453

Name of the Vulnerable Software and Affected Versions SimpleSAMLphp versions prior to 1.18.6 SimpleSAMLphp versions prior to 2.4.7 SimpleSAMLphp versions prior to 2.5.2 Description The SAML SP ACS path fails to enforce the Identity Provider IdP selected during an SP-initiated login. When a saved ...

PT-2026-55452

Name of the Vulnerable Software and Affected Versions SimpleSAMLphp versions prior to 4.19.3 SimpleSAMLphp versions prior to 4.20.2 SimpleSAMLphp versions prior to 5.0.6 SimpleSAMLphp versions prior to 6.2.1 Description In the HTTPArtifact::receive flow, the library may treat an unsigned embedded...

GHSA-WMXR-6J5F-838P Duplicate Advisory: Keycloak: Unauthorized access via improper validation of encrypted SAML assertions

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-794g-x443-36f7. This link is maintained to preserve external references. Original Description A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language SAML broker endpoint does not properly...

CVE-2026-2092

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language SAML broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. Thi...

CVE-2026-2092 Keycloak-services: keycloak: unauthorized access via improper validation of encrypted saml assertions

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language SAML broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. Thi...

CVE-2026-2092

A flaw was found in Keycloak. Keycloak's Security Assertion Markup Language SAML broker endpoint does not properly validate encrypted assertions when the overall SAML response is not signed. An attacker with a valid signed SAML assertion can exploit this by crafting a malicious SAML response. Thi...

MiracleLinux 9 : systemd-252-32.el9.ML.1 (AXSA:2024-7968:01)

The remote MiracleLinux 9 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2024-7968:01 advisory. systemd-resolved: Unsigned name response in signed zone is not refused when DNSSEC=yes CVE-2023-7008 Tenable has extracted the preceding description block...

Authentication Bypass

Node-SAML is vulnerable to Authentication Bypass. The vulnerability is due to improper signature verification because the library loads assertions from the unsigned original response document instead of the signed portion, allowing attackers with a validly signed document to alter authentication...

PT-2025-31149

Name of the Vulnerable Software and Affected Versions: Node-SAML versions 5.0.1 and below Description: Node-SAML improperly loads the assertion from the unsigned original response document, differing from the parts verified during signature checking. This allows modification of authentication...

Input validation

A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid...

UBUNTU-CVE-2017-18122

A signature-validation bypass issue was discovered in SimpleSAMLphp through 1.14.16. A SimpleSAMLphp Service Provider using SAML 1.1 will regard as valid any unsigned SAML response containing more than one signed assertion, provided that the signature of at least one of the assertions is valid...