GHSA-hf5p-q87m-crj7
MEDIUMGHSA-hf5p-q87m-crj7 is a medium-severity (CVSS 5.9) vulnerability in com.github.junrar:junrar. O3 Security confirms whether GHSA-hf5p-q87m-crj7 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Junrar: Path Traversal (Zip-Slip) via Sibling Directory Name Prefix
Blast Radius
com.github.junrar:junrarReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.
Description
Summary
A path traversal vulnerability in LocalFolderExtractor allows an attacker to write arbitrary files with attacker-controlled content into sibling directories when a crafted RAR archive is extracted.
Example
Given an extraction directory set to /tmp/extract, a crafted archive with an entry with the filename as ../extract_evil/file.txt would be actually extracted to /tmp/extract_evil/file.txt.
Details
The createDirectory() and createFile() methods inLocalFolderExtractor validate extraction paths using a string prefix.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | com.github.junrar:junrar | all versions | 7.5.10 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for com.github.junrar:junrar. 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 com.github.junrar:junrar to 7.5.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-hf5p-q87m-crj7 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 GHSA-hf5p-q87m-crj7 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 GHSA-hf5p-q87m-crj7. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-hf5p-q87m-crj7 in your dependencies?
O3 detects GHSA-hf5p-q87m-crj7 across Maven dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.