File System Vulnerability in MPXJ Open Source Project Management Library
CVE-2026-65829

5.3MEDIUM

Key Information:

Vendor

Joniles

Status
Mpxj
Vendor
CVE Published:
22 September 2026

What is CVE-2026-65829?

The MPXJ library, designed for reading and writing project plans from various file formats, is affected by a vulnerability that allows an attacker to craft Primavera P3 PRX or SureTrak STX files. Exploiting this flaw can lead to the unauthorized writing of files to arbitrary locations on the server's filesystem, posing significant security risks. This issue has been remedied in version 16.5.0, emphasizing the need for users of affected versions to upgrade immediately.

Affected Version(s)

mpxj >= 7.3.0, < 16.5.0

References

https://github.com/joniles/mpxj/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/joniles/mpxj/commit/4347315afab1ef5a29...
x_refsource_MISC
https://github.com/joniles/mpxj/releases/tag/v16.5.0
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.