CVE-2020-22403 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in express-cart. 1 public exploit reference exists, so weaponization risk is real. A fix is available for express-cart — see the affected versions and patch details below.
Cross-Site Request Forgery in express-cart
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2020-22403 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
express-cartnpmDescription
Cross Site Request Forgery (CSRF) vulnerability in Express cart v1.1.16 allows attackers to add an administrator account, add discount code or other unspecified impacts.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | express-cart | all versions | 1.1.17npm install express-cart@1.1.17 |
Affected Products
express-cartexpress-cart_projectResearch use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for express-cart, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update express-cart to 1.1.17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-22403 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.
Frequently Asked Questions
Is CVE-2020-22403 in your dependencies?
Find it across npm, including transitive dependencies.