Authentication Bypass

ruby-saml is vulnerable to Authentication Bypass. The vulnerability is due to a parser differential between ReXML and Nokogiri, allowing an attacker to execute a Signature Wrapping attack and potentially gain unauthorized access...

Remote Denial Of Service (DoS)

ruby-saml is vulnerable to remote Denial of Service DoS. The vulnerability is due to the message size check being performed before decompression, allowing attackers to bypass it using compressed SAML responses...

CVE-2025-25293

ruby-saml provides security assertion markup language SAML single sign-on SSO for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service DoS with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature due to differences in XML document namespace parsing between REXML and Nokogiri, implemented in xmlsecurity.rb. An attacker can bypass authentication via Signature Wrapping attack...

Ruby SAML allows a SAML authentication bypass due to DOCTYPE handling (parser differential)

Summary An authentication bypass vulnerability was found in ruby-saml due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping...

CVE-2025-25291

ruby-saml vulnerabilities CVE-2025-25291/25292/25293 relate to a parser differential between ReXML and Nokogiri that enables a Signature Wrapping authentication bypass and related DoS when handling SAML inputs. Affected versions prior to 1.12.4 and 1.18.0 are vulnerable; fixes are shipped in 1.12...

CVE-2025-25291 ruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differential)

ruby-saml provides security assertion markup language SAML single sign-on SSO for Ruby. An authentication bypass vulnerability was found in ruby-saml prior to versions 1.12.4 and 1.18.0 due to a parser differential. ReXML and Nokogiri parse XML differently; the parsers can generate entirely...

CVE-2025-25293 ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses

ruby-saml provides security assertion markup language SAML single sign-on SSO for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service DoS with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is...

CVE-2025-25293

CVE-2025-25293 concerns the ruby-saml library used for SAML SSO in Ruby. The issue affects prior to versions 1.12.4 and 1.18.0, where remote attackers could trigger a Denial of Service by sending compressed SAML responses. The vulnerability stems from how ruby-saml decompresses SAML assertions wi...

CVE-2025-25293 ruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responses

ruby-saml provides security assertion markup language SAML single sign-on SSO for Ruby. Prior to versions 1.12.4 and 1.18.0, ruby-saml is susceptible to remote Denial of Service DoS with compressed SAML responses. ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is...

Ruby SAML allows a SAML authentication bypass due to DOCTYPE handling (parser differential)

Summary An authentication bypass vulnerability was found in ruby-saml due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping...

Ruby SAML allows remote Denial of Service (DoS) with compressed SAML responses

Summary ruby-saml is susceptible to remote Denial of Service DoS with compressed SAML responses. Ruby-saml uses zlib to decompress SAML responses in case they're compressed. It is possible to bypass the message size check with a compressed assertion since the message size is checked before...

SAML Signature Validation Bypass

SPID.AspNetCore.Authentication is vulnerable to SAML signature validation bypass. The vulnerability is due to the lack of strict validation of the relationship between the signature and the signed object, allowing an attacker to inject a signed XML element and impersonate any SPID or CIE user...

CVE-2025-24894

CVE-2025-24894 concerns SPID.AspNetCore.Authentication (AspNetCore Remote Authenticator for SPID). The vulnerability arises from insufficient validation of SAML response signatures in VerifySignature(), which may allow an attacker to impersonate any SPID/CIE user by injecting a valid signature in...

CVE-2022-46823

A vulnerability has been identified in Mendix SAML Mendix 8 compatible All versions = V2.3.0 = V3.3.0 = V3.3.0 V3.3.8. The affected module is vulnerable to reflected cross-site scripting XSS attacks. This could allow an attacker to extract sensitive information by tricking users into accessing a...

CVE-2017-11430

OmniAuth OmnitAuth-SAML 1.9.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass...

CVE-2024-21893

A server-side request forgery vulnerability in the SAML component of Ivanti Connect Secure 9.x, 22.x and Ivanti Policy Secure 9.x, 22.x and Ivanti Neurons for ZTA allows an attacker to access certain restricted resources without authentication...

CVE-2024-1735

A vulnerability has been identified in armeria-saml versions less than 1.27.2, allowing the use of malicious SAML messages to bypass authentication. All users who rely on armeria-saml older than version 1.27.2 must upgrade to 1.27.2 or later...

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...

SUSE CVE-2023-45683

github.com/crewjam/saml is a saml library for the go language. In affected versions the package does not validate the ACS Location URI according to the SAML binding being parsed. If abused, this flaw allows attackers to register malicious Service Providers at the IdP and inject Javascript in the...