GHSA-p9j6-4pjr-gp48 is a medium-severity (CVSS 5.3) Path Traversal vulnerability in net.sf.mpxj:mpxj. A fix is available for net.sf.mpxj:mpxj — see the affected versions and patch details below.
Exploitation Status
No confirmed exploitation observed yet
- CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
- 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-p9j6-4pjr-gp48.
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
net.sf.mpxj:mpxjReal-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
common/InputStreamHelper.java in Packwood MPXJ before 8.3.5 allows directory traversal in the zip stream handler flow, leading to the writing of files to arbitrary locations.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | net.sf.mpxj:mpxj | all versions | 8.3.5net.sf.mpxj:mpxj:8.3.5 |
Affected Products
mpxjmpxjprimavera unifieroracleDetection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for net.sf.mpxj:mpxj, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update net.sf.mpxj:mpxj to 8.3.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-p9j6-4pjr-gp48 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 GHSA-p9j6-4pjr-gp48 in your dependencies?
Find it across Maven, including transitive dependencies.