PT-2026-43516 · Jonathan Robrecht · Single Mailchimp

Dj + 1 · Publicado 2026-05-27 · Atualizado 2026-06-04 · CVE-2026-8868

NVD

CVSS v3.1

6.4

Média

Vetor base

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

The Single Mailchimp plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'single-mailchimp' shortcode in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on user-supplied shortcode attributes (autocomplete, label, placeholder, btn text, success msg, error msg) which are concatenated directly into HTML output by the single mailchimp() function in shortcodes.php. 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.

Correção

XSS

Enumeração de Fraquezas

CWE-79

Identificadores relacionados

CVE-2026-8868

Produtos afetados

Single Mailchimp

Referências · 5

• https://plugins.trac.wordpress.org/browser/single-mailchimp/trunk/shortcodes.php#L23 · Nota
• https://reddit.com/r/StopBadBots/comments/1twww49/insane_record_145_wordpress_plugins_exposed_with · Publicação no Reddit
• https://plugins.trac.wordpress.org/browser/single-mailchimp/trunk/shortcodes.php#L9 · Nota
• https://wordfence.com/threat-intel/vulnerabilities/id/070616c9-b6a3-43d9-a82d-5cbcffc39ad9?source=cve · Nota
• https://nvd.nist.gov/vuln/detail/CVE-2026-8868 · Nota de Segurança