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GHSA-cvp8-5r8g-fhvq — Vulnerability in omniauth-saml — Advisory...

CRITICAL

omniauth-saml vulnerable to Improper Verification of Cryptographic Signature

Published September 11, 2024Updated August 7, 2026Source: osv

Summary

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](https://github.com/omniauth/omniauth-saml/releases) by upgrading ruby-saml to the patched versions v1.17.

Advisory Timeline

  • First published September 11, 2024 (761 days ago).
  • Last revised August 7, 2026 — 694 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update omniauth-saml to 2.2.1 or later
gem install omniauth-saml -v 2.2.1
Bundler
Update omniauth-saml to 1.10.5 or later
gem install omniauth-saml -v 1.10.5
Bundler
Update omniauth-saml to 2.1.2 or later
gem install omniauth-saml -v 2.1.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
omniauth-saml
rubygems
2.2.02.2.1
omniauth-saml
rubygems
0.9.0, 0.9.1, 0.9.2, 1.0.0 (+18 more)1.10.5
omniauth-saml
rubygems
2.0.0, 2.1.0, 2.1.12.1.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-347
    Improper Verification of Cryptographic SignatureMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 10.0 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

References

Frequently Asked Questions

What is GHSA-cvp8-5r8g-fhvq?
omniauth-saml vulnerable to Improper Verification of Cryptographic Signature This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 10.0/10).
How do I check if my project is affected by GHSA-cvp8-5r8g-fhvq?
GHSA-cvp8-5r8g-fhvq affects omniauth-saml. Use GeekWala's free vulnerability scanner to check your dependencies against GHSA-cvp8-5r8g-fhvq and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
10.0

Exploitation is straightforward and causes maximum impact. Patch immediately.

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