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CVE-2026-4067

MEDIUM

6.4

Description

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.

Details CVE

Score CVSS v3.16.4

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie3/21/2026

Derniere modification3/23/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-79

References

https://plugins.trac.wordpress.org/browser/ad-short/tags/2.0.1/ad_short.php#L130(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/ad-short/tags/2.0.1/ad_short.php#L77(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/ad-short/trunk/ad_short.php#L130(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/ad-short/trunk/ad_short.php#L77(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/313d2749-7662-4870-b0f7-19253797f833?source=cve(security@wordfence.com)

Correlations IOC

Aucune correlation enregistree

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