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...

EUVD-2026-48303

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

CVE-2026-15615

Technical details about CVE-2026-15615 are not publicly available in the provided connected documents. Monitor for updates.

CVE-2026-63094

SigNoz before 0.134.0 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 ...

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-2026-54781

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...

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,...

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-2026-46423

Rocket.Chat prior to versions 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 contains a SAML SP issue where the verifySignatures routine returns early if serviceProviderOptions.cert is falsy, causing silent skip of SAML Response and Assertion signature validation when the IdP certi...

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...

PT-2026-52096

Name of the Vulnerable Software and Affected Versions Rocket.Chat versions prior to 8.5.0 Rocket.Chat versions prior to 8.4.1 Rocket.Chat versions prior to 8.3.3 Rocket.Chat versions prior to 8.2.3 Rocket.Chat versions prior to 8.1.4 Rocket.Chat versions prior to 8.0.5 Rocket.Chat versions prior ...

CVE-2026-12804

A vulnerability was detected in lemonldap-ng up to 2.23.0. Impacted is an unknown function in the library lemonldap-ng-portal/lib/Lemonldap/NG/Portal/CDC.pm of the component SAML Common Domain Cookie Endpoint. Performing a manipulation of the argument url results in open redirect. The attack is...

CoreWCF: SAML SubjectConfirmation methods and holder-of-key proof keys are not enforced

Impact The relying application is given a ClaimsPrincipal for a subject whose authority over the assertion the sender never proved. There are two distinct exploit shapes: - Holder-of-key downgrade. An attacker who obtains a holder-of-key SAML assertion that was issued without KeyInfo issuer bug,...

Improper Verification of Cryptographic Signature

Overview CoreWCF.Primitives is a port of the service side of Windows Communication Foundation WCF to .NET Core. The goal of this project is to enable existing WCF services to move to .NET Core. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature...

EUVD-2026-35883

An application using spring-security-saml2-service-provider and the REDIRECT binding for SAML 2.0 Login or Logout may be vulnerable to a denial of service by way of an unbounded writer that inflates the compressed SAML payload into memory. Affected versions: Spring Security 5.7.0 through 5.7.23;...

CVE-2026-40988

CVE-2026-40988 refers to an issue in the use of the REDIRECT binding for SAML 2.0 Login/Logout with the Spring Security SAML2 Service Provider, where an unbounded writer can inflate the compressed SAML payload in memory, causing a denial of service. The vulnerability affects Spring Security versi...

cve-2026-41694 - LOW - SAML Payloads Decrypted Without Valid Signature

cve-2026-41694 - LOW - SAML Payloads Decrypted Without Valid Signature...

CVE-2026-41669

Admidio is an open-source user management solution. Prior to version 5.0.9, the Admidio SAML Identity Provider implementation discards the return value of its validateSignature method at both call sites handleSSORequest line 418 and handleSLORequest line 613. The method returns error strings on...