GHSA-wjmp-wphq-jvqf
Passport-wsfed-saml2 allows SAML Authentication Bypass via Signature Wrapping
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
Weekly download volume for affected packages — a proxy for how broadly this vulnerability is deployed.
passport-wsfed-saml2npmDescription
Overview
This vulnerability allows an attacker to impersonate any user during SAML authentication by crafting a SAMLResponse. This can be done by using a valid SAML object that was signed by the configured IdP.
Am I Affected?
You are affected by this SAML Signature Wrapping vulnerability if you are using passport-wsfed-saml2 version 4.6.3 or below, specifically under the following conditions:
- The service provider is using
passport-wsfed-saml2, - A valid SAML document signed by the Identity Provider can be obtained.
Fix
Upgrade to v4.6.4 or greater.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | passport-wsfed-saml2 | ≥ 3.0.5&&< 4.6.4 | 4.6.4 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for passport-wsfed-saml2. 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 passport-wsfed-saml2 to 4.6.4 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wjmp-wphq-jvqf 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-wjmp-wphq-jvqf 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-wjmp-wphq-jvqf. 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-wjmp-wphq-jvqf in your dependencies?
O3 detects GHSA-wjmp-wphq-jvqf across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.