XSS in Sherkspear Sherk Custom Post Type Displays
CVE-2026-3554
The Sherk Custom Post Type Displays plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'title' shortcode attribute in all versions up to, and including, 1.2.1. This is due to insufficient input sanitization and outpu…
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.000 (15.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Sherkspear Sherk Custom Post Type Displays — versions 0
Weakness classification (CWE)
References
- www.wordfence.com/threat-intel/vulnerabilities/id/d227d4e4-2899-434c-8b93-8d93a…
- plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/trunk/includ…
- plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/tags/1.2.1/i…
- plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/trunk/includ…
- plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/tags/1.2.1/i…
Frequently asked questions
- What is CVE-2026-3554?
- CVE-2026-3554 is a medium-severity vulnerability in Sherkspear Sherk Custom Post Type Displays, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-21.
- How severe is CVE-2026-3554?
- Medium severity. CVSS v3 base score is 6.4 out of 10.