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CVE-2026-65829 — Vulnerability in net.sf.mpxj — CVE Details

MEDIUM

MPXJ: Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers

Published September 22, 2026Updated October 1, 2026Source: osv

Summary

### Impact When reading a suitably crafted PRX or STX file, MPXJ can be made to write files to arbitrary locations in the file system. ### Patches This issue is addressed in MPXJ version 16.5.0. ### Workarounds Do not read PRX or STX files from untrusted sources.

Advisory Timeline

  • First published September 22, 2026 (20 days ago).
  • Last revised October 1, 2026 — 9 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update net.sf.mpxj to 16.5.0 or later
dotnet add package net.sf.mpxj --version 16.5.0
NuGet
Update net.sf.mpxj-for-vb to 16.5.0 or later
dotnet add package net.sf.mpxj-for-vb --version 16.5.0
NuGet
Update net.sf.mpxj-for-csharp to 16.5.0 or later
dotnet add package net.sf.mpxj-for-csharp --version 16.5.0
Bundler
Update mpxj to 16.5.0 or later
gem install mpxj -v 16.5.0
pip
Update mpxj to 16.5.0 or later
pip install "mpxj>=16.5.0"
Maven
Update net.sf.mpxj:mpxj to 16.5.0 or later
<!-- Update pom.xml dependency version to 16.5.0 for net.sf.mpxj:mpxj -->
NuGet
Update MPXJ.Net to 16.5.0 or later
dotnet add package MPXJ.Net --version 16.5.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (7)

Affects 4 ecosystems: nuget (4), maven (1), pypi (1), rubygems (1).

PackageEcosystemAffectedFixed In
net.sf.mpxj
nuget
10.0.0, 10.0.1, 10.0.2, 10.0.3 (+149 more)16.5.0
net.sf.mpxj-for-vb
nuget
10.0.0, 10.0.1, 10.0.2, 10.0.3 (+149 more)16.5.0
net.sf.mpxj-for-csharp
nuget
10.0.0, 10.0.1, 10.0.2, 10.0.3 (+149 more)16.5.0
mpxj
rubygems
10.0.0, 10.0.1, 10.0.2, 10.0.3 (+173 more)16.5.0
mpxj
pypi
10.0.0, 10.0.1, 10.0.2, 10.0.3 (+123 more)16.5.0
net.sf.mpxj:mpxj
maven
10.0.0, 10.0.1, 10.0.3, 10.0.4 (+172 more)16.5.0
MPXJ.Net
nuget
13.0.0, 13.0.1, 13.0.2, 13.1.0 (+40 more)16.5.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 5.3 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

Frequently Asked Questions

What is CVE-2026-65829?
MPXJ: Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 5.3/10).
How do I check if my project is affected by CVE-2026-65829?
CVE-2026-65829 affects net.sf.mpxj, net.sf.mpxj-for-vb and net.sf.mpxj-for-csharp (and 3 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-65829 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
5.3

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-7952-gx68-cjqr
PYSEC-2026-4108

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