GHSA-cvp8-5r8g-fhvq
CRITICALomniauth-saml vulnerable to Improper Verification of Cryptographic Signature
Blast Radius
omniauth-saml💎omniauth-saml💎omniauth-samlReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
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 patched versions v1.17.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | omniauth-saml | ≥ 2.0.0&&< 2.1.2 | 2.1.2 |
| 💎RubyGems | omniauth-saml | all versions | 1.10.5 |
| 💎RubyGems | omniauth-saml | ≥ 2.2.0&&< 2.2.1 | 2.2.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for omniauth-saml. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update omniauth-saml to 2.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cvp8-5r8g-fhvq is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-cvp8-5r8g-fhvq is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-cvp8-5r8g-fhvq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-cvp8-5r8g-fhvq in your dependencies?
O3 detects GHSA-cvp8-5r8g-fhvq across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.