CVE-2026-15981

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 5.4.4. This is due to the mosamlvalidatesignature function performing a loose boolean check on the raw tri-state integer returned by PHP's opensslverify, causing a...

CVE-2026-15981

The CVE describes an unauthenticated authentication bypass in the WordPress SAML SSO Login plugin up to version 5.4.4. The root cause is mo_saml_validate_signature() evaluating the OpenSSL verify result (-1) as truthy due to a loose boolean check on the value returned by PHP openssl_verify(). Thi...

CVE-2026-15614

Logto silently fails to delete IdP-initiated SAML sessions, enabling session replay and reuse within the session’s validity window...

EUVD-2026-48303

Logto silently fails to delete IdP-initiated SAML sessions, enabling session replay and reuse within the session’s validity window...

CVE-2026-15614

CVE-2026-15614 affects Logto where IdP-initiated SAML sessions are not deleted, enabling session replay within the session validity window. The issue is tied to the core verification logic (see logto core verification-helpers single-sign-on.ts) and results in the reuse of an active IdP-initiated ...

CVE-2026-15615

The CVE-2026-15615 issue concerns Logto’s SAML handling. The root cause is the omission of validation for the SAML element, which allows an attacker to strip time and audience restrictions and replay assertions indefinitely. This is documented in the connected sources as affecting Logto’s SAML f...

PT-2026-60776

SigNoz through 0.133.0 contains an open redirect vulnerability in the SSO authentication flow that allows unauthenticated attackers to steal session tokens from any user on instances configured with Google OAuth, SAML, or OIDC. Attackers can call the unauthenticated sessions context endpoint with...

EUVD-2026-44866

The SAML Single Sign On – SSO Login plugin for WordPress is vulnerable to Authentication Bypass via SAML Signature Algorithm Confusion in all versions up to, and including, 5.4.3. The vulnerability exists because MoSAMLUtilities::mosamlcastkey reads the SignatureMethod Algorithm attribute directl...

CVE-2026-15013

Technical details are not publicly available in the provided documents. Monitor for updates.

CVE-2026-55789 Logto: SAML IdP injects user-controlled profile attributes raw into signed assertions, allowing privilege escalation at relying Service Providers

Logto is the modern, open-source auth infrastructure for SaaS and AI apps. Prior to 1.41.0, Logto's self-hosted SAML application IdP built the signed SAML response and assertion by string-substituting user-controlled profile attributes such as name, email, and custom attribute-mapping values into...

CVE-2026-54781

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML token validation does not enforce SubjectConfirmation method URIs or holder-of-key proof keys in SamlSecurityTokenHandler, allowing holder-of-key downgrade or custom...

CVE-2026-54781

CoreWCF (SAML token validation) does not enforce SubjectConfirmation method URIs or holder-of-key proof keys in SamlSecurityTokenHandler, allowing holder-of-key downgrade or custom confirmation method assertions to authenticate subjects without proper authority. Affects CoreWCF.Primitives and rel...

CVE-2026-54781

CoreWCF is a port of the service side of Windows Communication Foundation WCF to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF SAML token validation does not enforce SubjectConfirmation method URIs or holder-of-key proof keys in SamlSecurityTokenHandler, allowing holder-of-key downgrade or custom...

GO-2026-5894 Casdoor does not validate the AudienceRestriction element in SAML assertions in github.com/casdoor/casdoor

Casdoor does not validate the AudienceRestriction element in SAML assertions in github.com/casdoor/casdoor...

EUVD-2026-12688

Keycloak: Unauthorized access via improper validation of encrypted SAML assertions...

CVE-2026-44946

A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service ACS handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,...

CVE-2026-44946

A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service ACS handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,...

EUVD-2026-40304

A SAML authentication replay vulnerability in Rancher's Assertion Consumer Service ACS handler did not enforce one-time use of SAML assertion, potentially allowing person in the middle attacks against Rancher, affecting Rancher 2.14.0 before 2.14.3,...

EUVD-2026-37950

Relyra SAML SignatureValue not cryptographically verified - authentication bypass...

CVE-2026-46423 Rocket.Chat: SAML signature validation skipped when IdP certificate field is empty

Rocket.Chat is an open-source, secure, fully customizable communications platform. Prior to 8.5.0, 8.4.1, 8.3.3, 8.2.3, 8.1.4, 8.0.5, 7.13.7, and 7.10.11, Rocket.Chat's SAML service provider implementation silently skips both SAML Response and Assertion signature validation when the configured Id...