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CVE-2026-4278

MEDIUM

6.4

Description

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 user-supplied shortcode attributes, specifically the 'text' and 'cat' attributes. The 'text' attribute is output directly into HTML content on line 159 without any escaping (e.g., esc_html()). The 'cat' attribute is used unescaped in HTML class attributes on lines 135 and 157 without esc_attr(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVE Details

CVSS v3.1 Score6.4

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/26/2026

Last Modified3/30/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L135(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L157(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L159(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/tags/2.3/inc/functions-shortcode.php#L92(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L135(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L157(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L159(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/simple-download-counter/trunk/inc/functions-shortcode.php#L92(security@wordfence.com)

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3487364%40simple-download-counter&new=3487364%40simple-download-counter&sfp_email=&sfph_mail=(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/f23dec73-9031-4829-a84b-4979c8e8ded4?source=cve(security@wordfence.com)

IOC Correlations

No correlations recorded

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