MPXJ: XXE Vulnerability in MerlinReader

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-61570
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-22 20:17:04 UTC
Updated2026-09-24 16:17:08 UTC
DescriptionMPXJ 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

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

EPSS: 0.003470000 probability, percentile 0.255430000 (date 2026-09-24)

Problem Types: CWE-611 | CWE-611 CWE-611: Improper Restriction of XML External Entity Reference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Joniles Mpxj affected >= 5.5.5, < 16.4.1 Not specified

References

ReferenceSourceLinkTags
github.com/joniles/mpxj/security/advisories/GHSA-5vvx-3h34-f3gj [email protected] github.com
github.com/joniles/mpxj/commit/6e8288bc4d1cd62842af298004dc74fe66fb0805 [email protected] github.com
github.com/joniles/mpxj/releases/tag/v16.4.1 [email protected] github.com
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