High severity · published Nov 21, 2025
CVE-2025-66073
WordPress WP Webhooks plugin <= 3.3.8 - PHP Object Injection vulnerability
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
Deserialization of Untrusted Data vulnerability in Cozmoslabs WP Webhooks wp-webhooks allows Object Injection.This issue affects WP Webhooks: from n/a through <= 3.3.8.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WW
WP Webhooks · Cozmoslabs
through 3.3.8 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-66073
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-66073
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/wp-webhooks/vulnerability/wordpress-wp-webhooks-plugin-3-3-8-php-object-injection-vulnerability?_s_id=cve
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