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Vulnerability record · CVE-2018-18573 · published 22 August 2019

CVE-2018-18573: Oscommerce code injection vulnerability

Oscommerce · Oscommerce

osCommerce 2.3.4.1 has an incomplete '.htaccess' for blacklist filtering in the "product" page. Remote authenticated administrators can upload new '.htaccess' files (e.g., omitting .php) and subsequently achieve arbitrary PHP code execution via a /catalog/admin/categories.php?cPath=&action=new_product URI.

7.2 CVSS 3.0 High EPSS 2.6% · top 15.4% CWE-94 · Code injection
7.2CVSS 3.0 base score, v2 6.5
2.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

osCommerce 2.3.4.1 has an incomplete '.htaccess' for blacklist filtering in the "product" page. Remote authenticated administrators can upload new '.htaccess' files (e.g., omitting .php) and subsequently achieve arbitrary PHP code execution via a /catalog/admin/categories.php?cPath=&action=new_product URI.

CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/osCommerce/oscommerce2/issues/631 Third Party Advisory
https://github.com/osCommerce/oscommerce2/issues/631 Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-18573), CISA KEV, FIRST EPSS (scores of 2026-10-06). This page is refreshed as NVD updates the record.