CVE-2024-29271
MEDIUMCVE-2024-29271 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in vvvebjs. O3 Security confirms whether CVE-2024-29271 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
VvvebJs Reflected Cross-Site Scripting (XSS) vulnerability
Blast Radius
vvvebjsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects npm packages — download data is not available via public APIs for these ecosystems.
Description
Reflected Cross-Site Scripting (XSS) vulnerability in VvvebJs before version 1.7.7, allows remote attackers to execute arbitrary code and obtain sensitive information via the action parameter in save.php.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | vvvebjs | all versions | 1.7.5 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for vvvebjs. 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 vvvebjs to 1.7.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-29271 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-2024-29271 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-2024-29271. 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-2024-29271 in your dependencies?
O3 detects CVE-2024-29271 across npm dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.