GHSA-j945-c44v-97g6
MEDIUMMPXJ has a Potential Path Traversal Vulnerability
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.
Blast Radius
net.sf.mpxj:mpxj.NETnet.sf.mpxj.NETnet.sf.mpxj-for-csharp.NETnet.sf.mpxj-for-vb.NETMPXJ.Net🐍mpxj💎mpxjReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven, NuGet packages — download data is not available via public APIs for these ecosystems.
Description
Impact
The patch for the historical vulnerability CVE-2020-35460 in MPXJ is incomplete as there is still a possibility that a malicious path could be constructed which would not be picked up by the original fix and allow files to be written to arbitrary locations.
Patches
The issue is addressed in MPXJ version 13.5.1
Workarounds
Do not pass zip files to MPXJ.
References
N/A
Credits
Issue report and patch provided by yyjLF and sprinkle
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| ☕Maven | net.sf.mpxj:mpxj | ≥ 8.3.5&&< 13.5.1 | 13.5.1 |
| .NETNuGet | net.sf.mpxj | ≥ 8.3.5&&< 13.5.1 | 13.5.1 |
| .NETNuGet | net.sf.mpxj-for-csharp | ≥ 8.3.5&&< 13.5.1 | 13.5.1 |
| .NETNuGet | net.sf.mpxj-for-vb | ≥ 8.3.5&&< 13.5.1 | 13.5.1 |
| .NETNuGet | MPXJ.Net | ≥ 13.0.0&&< 13.5.1 | 13.5.1 |
| 🐍PyPI | mpxj | ≥ 8.3.5&&< 13.5.1 | 13.5.1 |
Detection & 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. 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 net.sf.mpxj:mpxj to 13.5.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-j945-c44v-97g6 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-j945-c44v-97g6 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-j945-c44v-97g6. 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-j945-c44v-97g6 in your dependencies?
O3 detects GHSA-j945-c44v-97g6 across Maven, NuGet, PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.