CVE-2020-5840 is a high-severity (CVSS 7.5) Path Traversal vulnerability in hashbrown-cms. A fix is available for hashbrown-cms — see the affected versions and patch details below.
HashBrown CMS Directory Traversal
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
hashbrown-cmsReal-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
An issue was discovered in HashBrown CMS before 1.3.2. Server/Entity/Resource/Connection.js allows an attacker to reach a parent directory via a crafted name or ID field.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | hashbrown-cms | all versions | 1.3.2npm install hashbrown-cms@1.3.2 |
Affected Products
hashbrown cmshashbrowncmsDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for hashbrown-cms, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update hashbrown-cms to 1.3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-5840 is resolved across your whole dependency graph.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.
Frequently Asked Questions
Is CVE-2020-5840 in your dependencies?
Find it across npm, including transitive dependencies.