XSS in Specialk Simple Download Counter
CVE-2026-4278
The Simple Download Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sdc_menu' shortcode in all versions up to, and including, 2.3. This is due to insufficient input sanitization and output escaping on use…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.001 (24.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Specialk Simple Download Counter — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/f23dec73-9031-4829-a84b-4979c…
- plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-…
- plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functio…
- plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-…
- plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functio…
- plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-…
- plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functio…
- plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-…
- plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functio…
- plugins.trac.wordpress.org/changeset
Frequently asked questions
- What is CVE-2026-4278?
- CVE-2026-4278 is a medium-severity vulnerability in Specialk Simple Download Counter, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-26.
- How severe is CVE-2026-4278?
- Medium severity. CVSS v3 base score is 6.4 out of 10.