CVE-2018-14040
MEDIUMBootstrap vulnerable to Cross-Site Scripting (XSS)
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.
bootstrapnpmDescription
In Bootstrap before 4.1.2, XSS is possible in the collapse data-parent attribute.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | org.webjars:bootstrap | ≥ 4.0.0&&< 4.1.2 | 4.1.2 |
| ☕Maven | org.webjars:bootstrap | ≥ 2.3.0&&< 3.4.0 | 3.4.0 |
| 📦npm | bootstrap | ≥ 4.0.0&&< 4.1.2 | 4.1.2 |
| 📦npm | bootstrap | ≥ 2.3.0&&< 3.4.0 | 3.4.0 |
| .NETNuGet | bootstrap | ≥ 2.3.0&&< 3.4.0 | 3.4.0 |
| .NETNuGet | bootstrap | ≥ 4.0.0&&< 4.1.2 | 4.1.2 |
Research 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 org.webjars:bootstrap. 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 org.webjars:bootstrap to 4.1.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2018-14040 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 CVE-2018-14040 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 CVE-2018-14040. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2018-14040 in your dependencies?
O3 detects CVE-2018-14040 across Maven, npm, NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.