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CVE-2026-65829

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

5.3 MediumFix available

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 7.3.0 until 16.5.0, reading a suitably crafted Primavera P3 PRX or SureTrak STX file can cause MPXJ to write files to arbitrary locations in the filesystem. This issue is fixed in version 16.5.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.43%Unchanged since Sep 23, 2026
90%50%10%1%

What each source reports

CVE List Score used 5.3

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

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 7.3.0 until 16.5.0, reading a suitably crafted Primavera P3 PRX or SureTrak STX file can cause MPXJ to write files to arbitrary locations in the filesystem. This issue is fixed in version 16.5.0.

Record
CVE-2026-65829
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
EUVDEUVD-2026-84819 5.3

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 7.3.0 until 16.5.0, reading a suitably crafted Primavera P3 PRX or SureTrak STX file can cause MPXJ to write files to arbitrary locations in the filesystem. This issue is fixed in version 16.5.0.

Record
EUVD-2026-84819
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-7952-gx68-cjqr 5.3

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

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.

Record
GHSA-7952-gx68-cjqr
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
NVD 5.3

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 7.3.0 until 16.5.0, reading a suitably crafted Primavera P3 PRX or SureTrak STX file can cause MPXJ to write files to arbitrary locations in the filesystem. This issue is fixed in version 16.5.0.

Record
CVE-2026-65829
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
OSV 5.3

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

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 7.3.0 until 16.5.0, reading a suitably crafted Primavera P3 PRX or SureTrak STX file can cause MPXJ to write files to arbitrary locations in the filesystem. This issue is fixed in version 16.5.0.

Record
CVE-2026-65829
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVGHSA-7952-gx68-cjqr 5.3

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

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.

Record
GHSA-7952-gx68-cjqr
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness
CWE-22
Updated
2026-11-02
OSVPYSEC-2026-4108 5.3

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

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.

Record
PYSEC-2026-4108
CVSS 3.1
5.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
MPXJ.Net
NuGet
 7.3.0 up to 16.5.0
16.5.0
mpxj
RubyGems
 7.3.0 up to 16.5.0
16.5.0
mpxj
PyPI
 7.3.0 up to 16.5.0
16.5.0
net.sf.mpxj
NuGet
 7.3.0 up to 16.5.0
16.5.0
net.sf.mpxj-for-csharp
NuGet
 7.3.0 up to 16.5.0
16.5.0
net.sf.mpxj-for-vb
NuGet
 7.3.0 up to 16.5.0
16.5.0
net.sf.mpxj:mpxj
Maven
 7.3.0 up to 16.5.0
16.5.0
MPXJ.Net
NuGet
 7.3.0 up to 16.5.0, plus listed versions
13.0.013.0.113.0.213.1.013.10.0
Show 39 moreShow less
13.11.013.12.013.2.013.2.113.2.213.3.013.3.113.4.013.4.113.4.213.5.013.5.113.6.013.8.013.9.014.0.014.1.014.2.014.3.014.3.114.3.214.3.314.3.414.3.514.4.014.5.014.5.114.5.215.0.015.1.015.2.015.3.015.3.116.0.016.1.016.2.016.3.016.4.016.4.1
16.5.0
mpxj
RubyGems
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.210.0.310.0.4
Show 45 moreShow less
10.0.510.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.012.1.112.1.212.1.312.10.012.10.112.10.2
16.5.0
mpxj
PyPI
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.210.0.310.0.4
Show 45 moreShow less
10.0.510.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.112.1.212.1.312.10.012.10.112.10.212.10.3
16.5.0
Show 4 moreShow less
Affected packages
PackageAffectedFixed
net.sf.mpxj
NuGet
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.210.0.310.0.4
Show 45 moreShow less
10.0.510.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.012.1.112.1.212.1.312.10.012.10.112.10.2
16.5.0
net.sf.mpxj-for-csharp
NuGet
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.210.0.310.0.4
Show 45 moreShow less
10.0.510.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.012.1.112.1.212.1.312.10.012.10.112.10.2
16.5.0
net.sf.mpxj-for-vb
NuGet
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.210.0.310.0.4
Show 45 moreShow less
10.0.510.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.012.1.112.1.212.1.312.10.012.10.112.10.2
16.5.0
net.sf.mpxj:mpxj
Maven
 7.3.0 up to 16.5.0, plus listed versions
10.0.010.0.110.0.310.0.410.0.5
Show 45 moreShow less
10.1.010.10.010.11.010.12.010.13.010.14.010.14.110.15.010.16.010.16.110.16.210.2.010.3.010.4.010.5.010.6.010.6.110.6.210.7.010.8.010.9.010.9.111.0.011.1.011.2.011.3.011.3.111.3.211.4.011.5.011.5.111.5.211.5.311.5.412.0.012.0.112.0.212.1.012.1.112.1.212.1.312.10.012.10.112.10.212.10.3
16.5.0

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-65829 is a medium vulnerability (CVSS 5.3) in Joniles Mpxj, published September 22, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. Fixed in MPXJ.Net 16.5.0.

References

This page doesn't list everything

Left out here: 634 versions. The JSON record has them.

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