PT-2026-26870 · Nocaredev · Ad Short

Zakaria · Published 2026-03-21 · Updated 2026-03-21 · CVE-2026-4067

NVD

CVSS v3.1

6.4

Medium

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

The Ad Short plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ad' shortcode's 'client' attribute in all versions up to and including 2.0.1. This is due to insufficient input sanitization and output escaping on the 'client' shortcode attribute. The ad func() shortcode handler at line 71 accepts a 'client' attribute via shortcode atts() and directly concatenates it into a double-quoted HTML attribute (data-ad-client) at line 130 without applying esc attr() or any other sanitization. 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-4067

Affected Products

Ad Short

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-4067 · Security Note
• https://plugins.trac.wordpress.org/browser/ad-short/tags/2.0.1/ad_short.php#L77 · Note
• https://plugins.trac.wordpress.org/browser/ad-short/tags/2.0.1/ad_short.php#L130 · Note
• https://plugins.trac.wordpress.org/browser/ad-short/trunk/ad_short.php#L130 · Note
• https://plugins.trac.wordpress.org/browser/ad-short/trunk/ad_short.php#L77 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/313d2749-7662-4870-b0f7-19253797f833?source=cve · Note