CVE-2017-1000188 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in ejs. A fix is available for ejs — see the affected versions and patch details below.
mde ejs vulnerable to XSS
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
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.
ejsnpmDescription
nodejs ejs version older than 2.5.5 is vulnerable to a Cross-site-scripting in the ejs.renderFile() resulting in code injection
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | ejs | all versions | 2.5.5npm install ejs@2.5.5 |
Affected Products
ejsejsDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ejs, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update ejs to 2.5.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2017-1000188 is resolved across your whole dependency graph.
Workarounds
Stop passing untrusted input into the interpreter or shell: call the affected binary with an argument array rather than a composed command string, reject anything outside a strict allowlist of expected values, and run the component under an account that cannot reach beyond the work it legitimately does.
Frequently Asked Questions
Is CVE-2017-1000188 in your dependencies?
Find it across npm, including transitive dependencies.