VDB-393037 · Submit #878359 · CVE-2026-76572

pkp pkp-lib up to 3.3.0-22/3.4.0-10/3.5.0-4 XSLTransformer.php _transformPHP xml external entity reference

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.5	$0-$5k	1.86-

Summaryinfo

A vulnerability, which was classified as problematic, has been found in pkp pkp-lib up to 3.3.0-22/3.4.0-10/3.5.0-4. The impacted element is the function _transformPHP of the file classes/xslt/XSLTransformer.php. This manipulation causes xml external entity reference. This vulnerability is tracked as CVE-2026-76572. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in pkp pkp-lib up to 3.3.0-22/3.4.0-10/3.5.0-4. It has been declared as problematic. Affected by this vulnerability is the function _transformPHP of the file classes/xslt/XSLTransformer.php. The manipulation with an unknown input leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-76572. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are required for exploitation. Technical details are known, but no exploit is available.

By approaching the search of inurl:classes/xslt/XSLTransformer.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.3.0-23, 3.4.0-11 or 3.5.0-5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 78c699370ea43ae2784e1c4ace7c947d207f2b47 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

Name

pkp-lib

Version

License

open-source

Website

Product: https://github.com/pkp/pkp-lib/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pkp-lib 3.3.0-23/3.4.0-11/3.5.0-5
Patch: 78c699370ea43ae2784e1c4ace7c947d207f2b47

Timelineinfo

08/19/2026 Advisory disclosed
08/19/2026 +0 days VulDB entry created
08/19/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: 12977
Status: Confirmed

CVE: CVE-2026-76572 (🔒)
GCVE (CVE): GCVE-0-2026-76572
GCVE (VulDB): GCVE-100-393037

Entryinfo

Created: 08/19/2026 15:51
Changes: 08/19/2026 15:51 (58)
Complete: 🔍
Submitter: Razielx64
Cache ID: 216::103

Submitinfo

Accepted

Submit #878359: Public Knowledge Project OJS/OMP/OPS 3.3.0-22 and older XML Injection (by Razielx64)