High severity · published Oct 29, 2026
CVE-2026-116866
WordPress Extra Fees Plugin for WooCommerce plugin <= 4.4.0 - PHP Object Injection vulnerability
New
8.8
CVSS
–
EPSS
No
On KEV
Description
Contributor PHP Object Injection in Extra Fees Plugin for WooCommerce <= 4.4.0 versions.
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?
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EF
Extra Fees Plugin for WooCommerce · Dotstore
through 4.4.0 · source: vendor
Affected product
EF
Extra Fees Plugin for WooCommerce
Dotstore
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-116866
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-116866
vdb-entry
https://patchstack.com/database/wordpress/plugin/woo-conditional-product-fees-for-checkout/vulnerability/wordpress-extra-fees-plugin-for-woocommerce-plugin-4-4-0-php-object-injection-vulnerability?_s_id=cve
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