Medium severity · published Aug 19, 2026
CVE-2026-76572
pkp pkp-lib XSLTransformer.php _transformPHP xml external entity reference
4.7
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PK
pkp-lib · pkp
3.3.0-22; 3.4.0-10; 3.5.0-4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76572
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76572
github.com
https://github.com/pkp/pkp-lib/
github.com
https://github.com/pkp/pkp-lib/commit/78c699370ea43ae2784e1c4ace7c947d207f2b47
github.com
https://github.com/pkp/pkp-lib/issues/12977
github.com
https://github.com/pkp/pkp-lib/releases/tag/3_5_0-5
vuldb.com
https://vuldb.com/cve/CVE-2026-76572
vuldb.com
https://vuldb.com/submit/878359
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