Vulnerabilities in pkg:nuget/net.sf.mpxj

Q: What is CVE-2026-65829?

CVE-2026-65829 is a security vulnerability in MPXJ involving Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').

Q: Which MPXJ versions are affected?

Affected versions include releases prior to 16.5.0 across affected packages: mpxj, MPXJ.Net, net.sf.mpxj, net.sf.mpxj-for-csharp, net.sf.mpxj-for-vb, net.sf.mpxj:mpxj.

Q: What version fixes CVE-2026-65829?

Upgrading to 16.5.0 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is mpxj affected?

Yes, mpxj is affected in releases prior to 16.5.0. Upgrade your dependency to 16.5.0 or later.

Q: Is MPXJ.Net affected?

Yes, MPXJ.Net is affected in releases prior to 16.5.0. Upgrade your dependency to 16.5.0 or later.

Q: What is the CVSS score of CVE-2026-65829?

CVE-2026-65829 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Q: What CWE is associated with CVE-2026-65829?

CVE-2026-65829 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).

Q: How can I check RubyGems dependencies for CVE-2026-65829?

Run the dependency tree command: 'inspect dependencies for mpxj'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

PACKAGE

Advisory Identifier: GHSA-7952-gx68-cjqr

Advisory Summary

CVE-2026-65829 is a MODERATE (CVSS 5.3) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting MPXJ libraries in the RubyGems ecosystem. The issue involves potential path traversal vulnerability in primavera p3 prx and suretrak stx readers. Remediation is available by upgrading affected packages to version 16.5.0.

4 Known Advisory Record(s)

Package Vulnerability Intelligence

pkg:nuget/net.sf.mpxj

4 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:nuget/net.sf.mpxj. Select an advisory below to view technical details or fixes.

Advisory ID	CVE / NVD	Severity	Summary
GHSA-7952-gx68-cjqr	CVE-2026-65829	MODERATE	MPXJ: Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers
GHSA-5vvx-3h34-f3gj	CVE-2026-61570	HIGH	MPXJ: XXE Vulnerability in MerlinReader
GHSA-j945-c44v-97g6	CVE-2024-49771	MODERATE	MPXJ has a Potential Path Traversal Vulnerability
GHSA-jf2p-4gqj-849g	CVE-2022-41954	LOW	Temporary File Information Disclosure vulnerability in MPXJ

CVE-2026-65829 at a Glance

CVE Identifier CVE-2026-65829

GHSA Identifier GHSA-7952-gx68-cjqr

Severity MODERATE

CVSS v3.1 Base Score 5.3

CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Product MPXJ

Package Ecosystem RubyGems

Published Date 2026-09-22

Last Updated 2026-09-22

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).

Attack Vector Network (AV:N)

Attack Complexity Low (AC:L)

Privileges Required None (PR:N)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality None (C:N)

Integrity Low (I:L)

Availability None (A:N)

How to Fix CVE-2026-65829

To remediate this vulnerability, upgrade all affected MPXJ dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

mpxj fixed: 16.5.0

Upgrade mpxj to 16.5.0

MPXJ.Net fixed: 16.5.0

Upgrade MPXJ.Net to 16.5.0

mpxj fixed: 16.5.0

pip install mpxj>=16.5.0

net.sf.mpxj fixed: 16.5.0

Upgrade net.sf.mpxj to 16.5.0

net.sf.mpxj-for-csharp fixed: 16.5.0

Upgrade net.sf.mpxj-for-csharp to 16.5.0

net.sf.mpxj-for-vb fixed: 16.5.0

Upgrade net.sf.mpxj-for-vb to 16.5.0

net.sf.mpxj:mpxj fixed: 16.5.0

<dependency>
    <groupId>net.sf.mpxj</groupId>
    <artifactId>mpxj</artifactId>
    <version>16.5.0</version>
</dependency>

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

inspect dependencies for mpxj

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-65829, inspect your project dependencies for MPXJ:

inspect dependencies for mpxj

Analyze the terminal output to locate any version of MPXJ in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 16.5.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In MPXJ, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

CVE-2026-65829 Affected MPXJ Versions

7 component(s)

Fixed Versions:

16.5.0

Product / Package	Ecosystem	Affected Versions	Fixed Version
mpxj gem/mpxj	RubyGems	≥ 7.3.0 < 16.5.0	16.5.0
MPXJ.Net nuget/MPXJ.Net	NuGet	≥ 7.3.0 < 16.5.0	16.5.0
mpxj pypi/mpxj	PyPI	≥ 7.3.0 < 16.5.0	16.5.0
net.sf.mpxj nuget/net.sf.mpxj	NuGet	≥ 7.3.0 < 16.5.0	16.5.0
net.sf.mpxj-for-csharp nuget/net.sf.mpxj-for-csharp	NuGet	≥ 7.3.0 < 16.5.0	16.5.0
net.sf.mpxj-for-vb nuget/net.sf.mpxj-for-vb	NuGet	≥ 7.3.0 < 16.5.0	16.5.0
net.sf.mpxj:mpxj maven/net.sf.mpxj/mpxj	Maven	≥ 7.3.0 < 16.5.0	16.5.0

References

GitHub Advisory / Wiki ADVISORY

https://github.com/joniles/mpxj/security/advisories/GHSA-7952-gx68-cjqr

Security Fix Commit FIX COMMIT

https://github.com/joniles/mpxj/commit/4347315afab1ef5a2907978a754fbc5b0ff58e6f

MPXJ Source Repository REPOSITORY

https://github.com/joniles/mpxj

MPXJ Release RELEASE

https://github.com/joniles/mpxj/releases/tag/v16.5.0

Frequently Asked Questions

What is CVE-2026-65829?

CVE-2026-65829 is a security vulnerability in MPXJ involving Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').

Which MPXJ versions are affected?

Affected versions include releases prior to 16.5.0 across affected packages: mpxj, MPXJ.Net, net.sf.mpxj, net.sf.mpxj-for-csharp, net.sf.mpxj-for-vb, net.sf.mpxj:mpxj.

What version fixes CVE-2026-65829?

Upgrading to 16.5.0 (or the latest patched release for your respective branch) resolves the vulnerability.

Is mpxj affected?

Yes, mpxj is affected in releases prior to 16.5.0. Upgrade your dependency to 16.5.0 or later.

Is MPXJ.Net affected?

Yes, MPXJ.Net is affected in releases prior to 16.5.0. Upgrade your dependency to 16.5.0 or later.

What is the CVSS score of CVE-2026-65829?

CVE-2026-65829 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

What CWE is associated with CVE-2026-65829?

CVE-2026-65829 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).

How can I check RubyGems dependencies for CVE-2026-65829?

Run the dependency tree command: 'inspect dependencies for mpxj'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

Machine-readable OSV JSON OSV v1.5 Schema

Normalized schema output

View Raw JSON

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-7952-gx68-cjqr",
  "modified" : "2026-09-22T20:34:27Z",
  "published" : "2026-09-22T20:34:27Z",
  "aliases" : [ "CVE-2026-65829" ],
  "summary" : "MPXJ: Potential Path Traversal Vulnerability in Primavera P3 PRX and SureTrak STX readers",
  "details" : "### Impact\nWhen reading a suitably crafted PRX or STX file, MPXJ can be made to write files to arbitrary locations in the file system.\n\n### Patches\nThis issue is addressed in MPXJ version 16.5.0.\n\n### Workarounds\nDo not read PRX or STX files from untrusted sources.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "MPXJ.Net"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.3.0"
      }, {
        "fixed" : "16.5.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "RubyGems",
      "name" : "mpxj"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.3.0"
      }, {
        "fixed" : "16.5.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "mpxj"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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    } ]
  }, {
    "package" : {
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    },
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    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "net.sf.mpxj-for-csharp"
    },
    "ranges" : [ {
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      "events" : [ {
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      }, {
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    } ]
  }, {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "net.sf.mpxj-for-vb"
    },
    "ranges" : [ {
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      "events" : [ {
        "introduced" : "7.3.0"
      }, {
        "fixed" : "16.5.0"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "net.sf.mpxj:mpxj"
    },
    "ranges" : [ {
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      "events" : [ {
        "introduced" : "7.3.0"
      }, {
        "fixed" : "16.5.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/joniles/mpxj/security/advisories/GHSA-7952-gx68-cjqr"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/joniles/mpxj/commit/4347315afab1ef5a2907978a754fbc5b0ff58e6f"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/joniles/mpxj"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/joniles/mpxj/releases/tag/v16.5.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-22T20:34:27Z",
    "nvd_published_at" : null
  }
}

CVSS V3

5.3 MODERATE