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OpenAdvisories
High · 7.5 CVE-2026-61570 EUVD-2026-84820GHSA-5vvx-3h34-f3gjPYSEC-2026-4107

MPXJ: XXE Vulnerability in MerlinReader

Published Sep 22, 2026 · Updated Sep 24, 2026 · Assigned by GitHub_M

Description

MPXJ is an open source library to read and write project plans from a variety of file formats and databases. From 5.5.5 until 16.4.1, MerlinReader creates a DocumentBuilder with default settings while parsing XML from the ZTIMEINTERVALS column of a Merlin project SQLite database, leaving doctype declarations and external entities enabled. A crafted database can cause the parser to read an arbitrary local file, although MPXJ's subsequent handling of the parsed XML makes disclosure of the file contents unlikely. This issue is fixed in version 16.4.1.

Affected products

VendorProductAffectedFixed
joniles mpxj >= 5.5.5, < 16.4.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
Maven net.sf.mpxj:mpxj >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj
NuGet MPXJ.Net >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj
NuGet net.sf.mpxj >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj
NuGet net.sf.mpxj-for-csharp >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj
NuGet net.sf.mpxj-for-vb >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj
PyPI mpxj >= 5.5.5, < 16.4.1 16.4.1 PYSEC-2026-4107
RubyGems mpxj >= 5.5.5, < 16.4.1 16.4.1 GHSA-5vvx-3h34-f3gj

References