Is CVE-2015-3300 actively exploited?

A proof-of-concept exploit is publicly available for CVE-2015-3300, but active exploitation has not been confirmed.

Can CVE-2015-3300 be exploited remotely?

Yes. CVE-2015-3300 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2015-3300?

CVE-2015-3300 has a CVSS score of 4.3 (MEDIUM).

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MEDIUMPOC

CVE-2015-3300

CWE-79Published: May 14, 2015· Updated: Jun 17, 2026

4.3

CVSS v3.1

Official Description

Multiple cross-site scripting (XSS) vulnerabilities in the TheCartPress eCommerce Shopping Cart (aka The Professional WordPress eCommerce Plugin) plugin for WordPress before 1.3.9.3 allow remote attackers to inject arbitrary web script or HTML via the (1) billing_firstname, (2) billing_lastname, (3) billing_company, (4) billing_tax_id_number, (5) billing_city, (6) billing_street, (7) billing_street_2, (8) billing_postcode, (9) billing_telephone_1, (10) billing_telephone_2, (11) billing_fax, (12) shipping_firstname, (13) shipping_lastname, (14) shipping_company, (15) shipping_tax_id_number, (16) shipping_city, (17) shipping_street, (18) shipping_street_2, (19) shipping_postcode, (20) shipping_telephone_1, (21) shipping_telephone_2, or (22) shipping_fax parameter to shopping-cart/checkout/; the (23) search_by parameter in the admin/AddressesList.php page to wp-admin/admin.php; the (24) address_id, (25) address_name, (26) firstname, (27) lastname, (28) street, (29) city, (30) postcode, or (31) email parameter in the admin/AddressEdit.php page to wp-admin/admin.php; the (32) post_id or (33) rel_type parameter in the admin/AssignedCategoriesList.php page to wp-admin/admin.php; or the (34) post_type parameter in the admin/CustomFieldsList.php page to wp-admin/admin.php.

NVD Source

Technical Analysis

CVE-2015-3300 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-2015-3300. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.