What is CVE-2026-105226?

CVE-2026-105226 is a medium-severity vulnerability in Oscommerce Oscommerce2, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-10-05.

How severe is CVE-2026-105226?

Medium severity. CVSS v3 base score is 4.7 out of 10.

RCE in Oscommerce Oscommerce2

CVE-2026-105226

A security flaw has been discovered in osCommerce osCommerce2 up to 2.3.4.1. This vulnerability affects the function include of the file admin/newsletters.php of the component Newsletter Management. Performing a manipulation of the argument module results in code injection. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Published 2026-10-05.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Oscommerce Oscommerce2 — versions 2.3.4.0, 2.3.4.1

Weakness classification (CWE)

References

vuldb.com/vuln/413428 (technical-description, vdb-entry)
vuldb.com/vuln/413428/cti (signature, permissions-required)
vuldb.com/cve/CVE-2026-105226 (third-party-advisory)
vuldb.com/submit/971047 (third-party-advisory)
github.com/osCommerce/oscommerce2/issues/676 (issue-tracking, exploit)
github.com/osCommerce/oscommerce2/ (product)

Frequently asked questions

What is CVE-2026-105226?: CVE-2026-105226 is a medium-severity vulnerability in Oscommerce Oscommerce2, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 4.7/10. Published 2026-10-05.
How severe is CVE-2026-105226?: Medium severity. CVSS v3 base score is 4.7 out of 10.