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CVE-2026-76572: XML External Entity Reference in pkp pkp-lib

0
Medium
VulnerabilityCVE-2026-76572cvecve-2026-76572
Published: 08/19/2026 (08/19/2026, 19:30:10 UTC)
Source: CVE Database V5
Vendor/Project: pkp
Product: pkp-lib

Description

CVE-2026-76572 is a medium severity vulnerability in pkp-lib affecting versions 3.3.0-22, 3.4.0-10, and 3.5.0-4. It involves an XML External Entity (XXE) reference issue in the _transformPHP function of classes/xslt/XSLTransformer.php. The vulnerability can be exploited remotely. Fixed versions 3.3.0-23, 3.4.0-11, and 3.5.0-5 address this issue.

CVSS v4.0

Score 5.1medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
High
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
Low
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
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

Affected software

pkp

pkp-lib

Affected versions
=3.3.0-22=3.4.0-10=3.5.0-4
GitHub Actionsmore threats →ai
pkp/pkp-lib
pkg:github/pkp/pkp-lib
Affected versions
=3.3.0-22=3.4.0-10=3.5.0-4
CPE configurations
cpe:2.3:a:pkp:pkp-lib:*:*:*:*:*:*:*:*

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AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 09/11/2026, 07:34:28 UTC

Technical Analysis

This vulnerability in pkp-lib up to versions 3.3.0-22, 3.4.0-10, and 3.5.0-4 allows remote attackers to exploit an XML External Entity (XXE) reference via the _transformPHP function in classes/xslt/XSLTransformer.php. The flaw enables external entity references to be processed, potentially leading to information disclosure or other impacts associated with XXE vulnerabilities. The issue is resolved by upgrading to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5, where the patch identified as 78c699370ea43ae2784e1c4ace7c947d207f2b47 has been applied.

Potential Impact

The vulnerability allows remote attackers to perform XML External Entity (XXE) attacks, which can lead to limited confidentiality and integrity impacts as indicated by the CVSS vector (VC:L/VI:L/VA:L). The CVSS score of 5.1 reflects a medium severity level. There are no known exploits in the wild at this time.

Mitigation Recommendations

Upgrade pkp-lib to version 3.3.0-23, 3.4.0-11, or 3.5.0-5 to apply the official patch (commit 78c699370ea43ae2784e1c4ace7c947d207f2b47) that fixes the XML External Entity reference vulnerability. No other mitigation is indicated or required.

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Technical Details

Data Version
5.2
Assigner Short Name
VulDB
Date Reserved
2026-08-19T13:45:40.432Z
Cvss Version
4.0
State
PUBLISHED

Threat ID: 6a860996acd9273b498b4c95

Added to database: 08/19/2026, 19:52:54 UTC

Last enriched: 09/11/2026, 07:34:28 UTC

Last updated: 10/02/2026, 14:46:10 UTC

Views: 75

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