CVE-2026-76572

pkp pkp-lib XSLTransformer.php _transformPHP xml external entity reference

State: Published
Severity: 5.1 Medium
Published: Aug 19, 2026
Updated: Aug 20, 2026
Reserved: Aug 19, 2026

Description

A vulnerability was detected in pkp pkp-lib up to 3.3.0-22/3.4.0-10/3.5.0-4. The affected element is the function _transformPHP of the file classes/xslt/XSLTransformer.php. The manipulation results in xml external entity reference. The attack can be executed remotely. Upgrading to version 3.3.0-23, 3.4.0-11 and 3.5.0-5 is sufficient to fix this issue. The patch is identified as 78c699370ea43ae2784e1c4ace7c947d207f2b47. Upgrading the affected component is advised.

Scores

CVSS	Score	Vector	Source
4.0	5.1 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
3.0	4.7 Medium	CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:O/RC:C	VulDB
2.0	5.8 Medium	AV:N/AC:L/Au:M/C:P/I:P/A:P/E:ND/RL:OF/RC:C	VulDB

Weaknesses

CWE-611 XML External Entity Reference
CWE-610 Externally Controlled Reference

Affected Products

Product	Versions
pkp-libpkp	3.3.0-22Affected 3.4.0-10Affected 3.5.0-4Affected 3.3.0-23Not affected 3.4.0-11Not affected 3.5.0-5Not affected

References

VDB-393037 | pkp pkp-lib XSLTransformer.php _transformPHP xml external entity referencevdb-entrytechnical-description
VDB-393037 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
CVE-2026-76572 | CVE Analysis and Reportthird-party-advisory
Submit #878359 | Public Knowledge Project OJS/OMP/OPS 3.3.0-22 and older XML Injectionthird-party-advisory
https://github.com/pkp/pkp-lib/issues/12977issue-tracking
https://github.com/pkp/pkp-lib/commit/78c699370ea43ae2784e1c4ace7c947d207f2b47patch
https://github.com/pkp/pkp-lib/releases/tag/3_5_0-5patch
https://github.com/pkp/pkp-lib/product

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