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CVE-2026-116866: WordPress Extra Fees Plugin for WooCommerce plugin <= 4.4.0 - PHP Object Injection vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-29 · updated 2026-10-30
• Weakness: CWE-502

Description

Contributor PHP Object Injection in Extra Fees Plugin for WooCommerce <= 4.4.0 versions.

Affected products

• Dotstore Extra Fees Plugin for WooCommerce: through 4.4.0

References

• 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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