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Vulnerability record · CVE-2026-61570 · published 22 September 2026

CVE-2026-61570: XML external entity (XXE) vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.35% · top 74.2% CWE-611 · XML external entity (XXE) Awaiting Analysis
7.5CVSS 3.1 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
24 Sep 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/joniles/mpxj/commit/6e8288bc4d1cd62842af298004dc74fe66fb0805
https://github.com/joniles/mpxj/releases/tag/v16.4.1
https://github.com/joniles/mpxj/security/advisories/GHSA-5vvx-3h34-f3gj

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Source: NIST National Vulnerability Database (record CVE-2026-61570), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.