GHSA-hf5p-q87m-crj7 is a medium-severity (CVSS 5.9) Path Traversal vulnerability in com.github.junrar:junrar. A fix is available for com.github.junrar:junrar — see the affected versions and patch details below.
Junrar: Path Traversal (Zip-Slip) via Sibling Directory Name Prefix
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-hf5p-q87m-crj7.
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.
How urgent is this, really
GHSA-hf5p-q87m-crj7 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
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 | 7.5.10com.github.junrar:junrar: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, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-hf5p-q87m-crj7 can be triaged on real exposure rather than presence alone.
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 Security finds GHSA-hf5p-q87m-crj7 across Maven dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.