PT-2026-33013 · Nighthawk · Vi: Include Post By

Nail Majdeddine · Published 2026-04-15 · Updated 2026-04-15 · CVE-2026-5717

Mitre

CVSS v3.1

6.4

Medium

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

The VI: Include Post By plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'class container' attribute of the 'include-post-by-cat' shortcode in all versions up to, and including, 0.4.200706 due to insufficient input sanitization and output escaping on user supplied attributes. 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-2026-5717

Affected Products

Vi: Include Post By

References · 3

• https://wordfence.com/threat-intel/vulnerabilities/id/b3e95dc2-0f50-4009-9cc0-a02f9977ce58?source=cve · Note
• https://plugins.trac.wordpress.org/browser/vi-include-post-by/tags/0.4.200706/vi_include_post_by.php#L809 · Note
• https://plugins.trac.wordpress.org/browser/vi-include-post-by/trunk/vi_include_post_by.php#L809 · Note