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High severity · published Jul 2, 2026
CVE-2026-56037
WordPress Themify Popup plugin <= 1.4.3 - PHP Object Injection vulnerability
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
Deserialization of Untrusted Data vulnerability in Themify Themify Popup allows Object Injection. This issue affects Themify Popup: from n/a through 1.4.3.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TP
Themify Popup · Themify
through 1.4.3 · source: vendor
Affected product
TP
Themify Popup
Themify
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56037
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-56037
patchstack.com
https://patchstack.com/database/wordpress/plugin/themify-popup/vulnerability/wordpress-themify-popup-plugin-1-4-3-php-object-injection-vulnerability?_s_id=cve