CVE-2025-27509 SAML authentication vulnerability due to improper SAML response validation

fleetdm/fleet is an open source device management, built on osquery. In vulnerable versions of Fleet, an attacker could craft a specially-formed SAML response to forge authentication assertions, provision a new administrative user account if Just-In-Time JIT provisioning is enabled, or create new...

CVE-2025-27509

Fleet has a SAML authentication vulnerability (CVE-2025-27509) due to improper SAML response validation in fleetdm/fleet. In vulnerable versions, an attacker could forge authentication assertions, potentially provisioning a new administrative user under JIT provisioning or creating accounts tied ...

USN-7309-1: Ruby SAML vulnerabilities

It was discovered that Ruby SAML did not properly validate SAML responses. An unauthenticated attacker could use this vulnerability to log in as an abitrary user. This issue only affected Ubuntu 16.04 LTS. CVE-2016-5697 It was discovered that Ruby SAML incorrectly utilized the results of XML DOM...

GHSA-VQ63-8F72-F486 AspNetCore Remote Authenticator for CIE3.0 Allows SAML Response Signature Verification Bypass

Description Authentication using Spid and CIE is based on the SAML2 standard which provides for two entities: Identity Provider IdP: the system that authenticates users and provides identity information SAML assertions to the Service Provider, essentially, it is responsible for managing user...

The AspNetCore Remote Authenticator for SPID Allows SAML Response Signature Verification Bypass

Description Authentication using Spid and CIE is based on the SAML2 standard which provides for two entities: Identity Provider IdP: the system that authenticates users and provides identity information SAML assertions to the Service Provider, essentially, it is responsible for managing user...

GHSA-36H8-R92J-W9VW The AspNetCore Remote Authenticator for SPID Allows SAML Response Signature Verification Bypass

Description Authentication using Spid and CIE is based on the SAML2 standard which provides for two entities: Identity Provider IdP: the system that authenticates users and provides identity information SAML assertions to the Service Provider, essentially, it is responsible for managing user...

CVE-2025-24895

CIE.AspNetCore.Authentication is an AspNetCore Remote Authenticator for CIE 3.0. Authentication using Spid and CIE is based on the SAML2 standard which provides two entities: 1. Identity Provider IDP: the system that authenticates users and provides identity information SAML affirmation to the...

CVE-2025-24895 SAML Response Signature Verification Bypass in CIE.AspNetCore.Authentication

CIE.AspNetCore.Authentication is an AspNetCore Remote Authenticator for CIE 3.0. Authentication using Spid and CIE is based on the SAML2 standard which provides two entities: 1. Identity Provider IDP: the system that authenticates users and provides identity information SAML affirmation to the...

CVE-2025-24895

CVE-2025-24895 describes a SAML signature verification bypass in the CIE.AspNetCore.Authentication SP component for SPID/CIE. The issue arises because the first signature in a SAML response is not guaranteed to refer to the root object; an attacker could inject an item signed as the first element...

CVE-2025-24895 SAML Response Signature Verification Bypass in CIE.AspNetCore.Authentication

CIE.AspNetCore.Authentication is an AspNetCore Remote Authenticator for CIE 3.0. Authentication using Spid and CIE is based on the SAML2 standard which provides two entities: 1. Identity Provider IDP: the system that authenticates users and provides identity information SAML affirmation to the...

CVE-2025-24894 SAML Response Signature Verification Bypass in SPID.AspNetCore.Authentication

SPID.AspNetCore.Authentication is an AspNetCore Remote Authenticator for SPID. Authentication using Spid and CIE is based on the SAML2 standard which provides two entities: Identity Provider IDP: the system that authenticates users and provides identity information SAML affirmation to the Service...

CVE-2025-24894 SAML Response Signature Verification Bypass in SPID.AspNetCore.Authentication

SPID.AspNetCore.Authentication is an AspNetCore Remote Authenticator for SPID. Authentication using Spid and CIE is based on the SAML2 standard which provides two entities: Identity Provider IDP: the system that authenticates users and provides identity information SAML affirmation to the Service...

AspNetCore Remote Authenticator for CIE3.0 Allows SAML Response Signature Verification Bypass

Authentication using Spid and CIE is based on the SAML2 standard which provides for two entities: Identity Provider IdP: the system that authenticates users and provides identity information SAML assertions to the Service Provider, essentially, it is responsible for managing user credentials and...

DEBIAN-CVE-2024-52596

SimpleSAMLphp xml-common is a common classes for handling XML-structures. When loading an untrusted XML document, for example the SAMLResponse, it's possible to induce an XXE. This vulnerability is fixed in 1.19.0...

SUSE CVE-2024-45409

The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in = 12.2 and 1.13.0 = 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document by the IdP can thus forge a SAML...

Important: Red Hat Security Advisory: Red Hat Single Sign-On 7.6.11 security update on RHEL 8

New Red Hat Single Sign-On 7.6.11 packages are now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each...

Authentication Bypass

ruby-saml is vulnerable to Authentication Bypass. The vulnerability is due to improper verification of the signature in the SAML Response, allowing an unauthenticated attacker to forge a SAML Response/Assertion and log in as an arbitrary user...

omniauth-saml vulnerable to Improper Verification of Cryptographic Signature

ruby-saml, the dependent SAML gem of omniauth-saml has a signature wrapping vulnerability in = v1.12.0 and v1.13.0 to v1.16.0 , see https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2 As a result, omniauth-saml created a new release by upgrading ruby-saml to the...

SAML authentication bypass via Incorrect XPath selector

Ruby-SAML in = 12.2 and 1.13.0 = 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document by the IdP can thus forge a SAML Response/Assertion with arbitrary contents. This would allow the attacker to log in as arbitrar...

UBUNTU-CVE-2024-45409

The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in = 12.2 and 1.13.0 = 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document by the IdP can thus forge a SAML...