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Back to active CVEs
Critical · CVSS 10.0CVE-2024-45409GHSA-JW9C-MFG7-9RX2

The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selectorCVE-2024-45409

Answer in brief

CVE-2024-45409 records a Critical severity (CVSS 10.0) vulnerability in The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector. The current sources do not mark it as known exploited. The current feed maps omniauth/omniauth-saml (generic), SAML-Toolkits/ruby-saml (generic), onelogin/ruby-saml (generic), ruby-saml (rubygems) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2024Updated Nov 3, 2026Source checked Nov 3, 2026First seen by HOL Aug 8, 2026Material review Nov 3, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 10.0
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 10.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps omniauth/omniauth-saml (generic), SAML-Toolkits/ruby-saml (generic), onelogin/ruby-saml (generic), ruby-saml (rubygems) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
omniauth/omniauth-samlgeneric>=0 <=2.1.0Not reported
SAML-Toolkits/ruby-samlgeneric<1.12.3 || >=1.13.0 <1.17.01.12.3, 1.17.0
onelogin/ruby-samlgeneric>=0 <1.12.3 || >=1.13.0 <1.17.01.12.3, 1.17.0
ruby-samlrubygems>=0 <1.12.31.12.3
ruby-samlrubygems>=1.13.0 <1.17.01.17.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for omniauth/omniauth-saml, SAML-Toolkits/ruby-saml, onelogin/ruby-saml.
  2. 2Review the reported fix. Update SAML-Toolkits/ruby-saml to 1.12.3; onelogin/ruby-saml to 1.12.3; ruby-saml to 1.12.3; ruby-saml to 1.17.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 10, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 3, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 8, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencelists.debian.org
  • Source referencenews.ycombinator.com
  • Source referencesecurity.netapp.com
  • Source referencessoready.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • NVD vulnerability recordnvd.nist.gov
Upstream source description

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 Response/Assertion with arbitrary contents. This would allow the attacker to log in as arbitrary user within the vulnerable system. This vulnerability is fixed in 1.17.0 and 1.12.3.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-347
Source
CVE List V5
Source checked
Nov 3, 2026
References
14 linked sources
Open source record