High severity · published Jul 17, 2026
CVE-2026-45162
Pimcore: Unsafe PHP Deserialization in Multiple Locations Without allowed_classes Restriction
8.0
CVSS
1%
EPSS
No
On KEV
Description
Pimcore is an Open Source Data & Experience Management Platform. Prior to 11.5.17 (LTS) and 12.3.7, multiple Pimcore locations call PHP's unserialize() on data from database columns and filesystem files without the allowed_classes restriction, including lib/Tool/Authentication.php, models/Site/Dao.php, models/DataObject/ClassDefinition/CustomLayout/Dao.php, models/Tool/TmpStore/Dao.php, models/Asset/WebDAV/Service.php, and admin-ui-classic-bundle/src/Helper/Dashboard.php, enabling object injection and remote code execution if an attacker can control the serialized data source. This issue is fixed in versions 11.5.17 (LTS) and 12.3.7.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 62% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PI
pimcore · pimcore
< 11.5.17; >= 12.0.0, < 12.3.7 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45162
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45162
github.com
https://github.com/pimcore/pimcore/commit/4788bf3a3a7f2f760a8fe61e522565941e154e1e
github.com
https://github.com/pimcore/pimcore/pull/19119
github.com
https://github.com/pimcore/pimcore/releases/tag/v12.3.7
github.com
https://github.com/pimcore/pimcore/security/advisories/GHSA-36fc-7wjg-mfvj
More from pimcore
9.9
CVE-2026-55634
Pimcore: Remote Code Execution via DataObject Class-Definition Field Name
9.8
CVE-2022-39365
RCE vulnerability in Pimcore/Mail & Dynamic Text Layout
9.8
CVE-2019-18985
Pimcore before 6.2.2 lacks brute force protection for the 2FA token
9.8
CVE-2019-18981
Pimcore before 6.2.2 lacks an Access Denied outcome for a certain scenario of an incorrect recipient ID of a notification
9.3
CVE-2026-55220
Pimcore Hotspotimage getDataFromResource() unrestricted Serialize::unserialize over object-store column