CVE-2026-76572: XML External Entity Reference in pkp pkp-lib
CVE-2026-76572 is a medium severity vulnerability in pkp 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 within classes/xslt/XSLTransformer.php. This vulnerability can be exploited remotely. Upgrading to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5 addresses the issue.
AI Analysis
Technical Summary
The vulnerability CVE-2026-76572 in pkp pkp-lib up to versions 3.3.0-22, 3.4.0-10, and 3.5.0-4 is caused by improper handling of XML external entity references in the _transformPHP function of the file classes/xslt/XSLTransformer.php. This flaw allows remote attackers to manipulate XML input to trigger external entity references, potentially leading to information disclosure or other impacts associated with XXE vulnerabilities. The issue is fixed by upgrading to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5, with the patch identified by commit 78c699370ea43ae2784e1c4ace7c947d207f2b47.
Potential Impact
The vulnerability allows remote attackers to exploit XML external entity references, which can lead to limited confidentiality impacts such as disclosure of local files or internal system information. The CVSS 4.0 base score is 5.1 (medium severity), indicating a moderate risk with network attack vector, low complexity, no user interaction, and requiring high privileges.
Mitigation Recommendations
Upgrading the pkp-lib component to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5 fully mitigates this vulnerability. Users should apply these updates promptly to address the issue. No other mitigation or temporary workaround is indicated.
CVE-2026-76572: XML External Entity Reference in pkp pkp-lib
Description
CVE-2026-76572 is a medium severity vulnerability in pkp 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 within classes/xslt/XSLTransformer.php. This vulnerability can be exploited remotely. Upgrading to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5 addresses the issue.
CVSS v4.0
Score 5.1medium
Affected software
pkg:github/pkp/pkp-libcpe:2.3:a:pkp:pkp-lib:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-76572 in pkp pkp-lib up to versions 3.3.0-22, 3.4.0-10, and 3.5.0-4 is caused by improper handling of XML external entity references in the _transformPHP function of the file classes/xslt/XSLTransformer.php. This flaw allows remote attackers to manipulate XML input to trigger external entity references, potentially leading to information disclosure or other impacts associated with XXE vulnerabilities. The issue is fixed by upgrading to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5, with the patch identified by commit 78c699370ea43ae2784e1c4ace7c947d207f2b47.
Potential Impact
The vulnerability allows remote attackers to exploit XML external entity references, which can lead to limited confidentiality impacts such as disclosure of local files or internal system information. The CVSS 4.0 base score is 5.1 (medium severity), indicating a moderate risk with network attack vector, low complexity, no user interaction, and requiring high privileges.
Mitigation Recommendations
Upgrading the pkp-lib component to versions 3.3.0-23, 3.4.0-11, or 3.5.0-5 fully mitigates this vulnerability. Users should apply these updates promptly to address the issue. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-19T13:45:40.432Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a860996acd9273b498b4c95
Added to database: 08/19/2026, 19:52:54 UTC
Last enriched: 08/19/2026, 20:08:03 UTC
Last updated: 08/19/2026, 20:12:25 UTC
Views: 3
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