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CVE-2026-3554 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

Description

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 output escaping on the 'title' attribute of the 'sherkcptdisplays' shortcode. Specifically, in the sherkcptdisplays_func() function in includes/SherkCPTDisplaysShortcode.php, the 'title' attribute value is extracted from shortcode_atts() on line 19 and directly concatenated into an HTML <h2> tag on line 31 without any escaping. 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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CNA: [email protected]CVSS-B:6.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/tags/1.2.1/includes/SherkCPTDisplaysShortcode.php#L19	[email protected]	Broken LinkSource CodeVendor
https://plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/tags/1.2.1/includes/SherkCPTDisplaysShortcode.php#L31	[email protected]	Broken LinkSource CodeVendor
https://plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/trunk/includes/SherkCPTDisplaysShortcode.php#L19	[email protected]	Source CodeVendor
https://plugins.trac.wordpress.org/browser/sherk-custom-post-type-displays/trunk/includes/SherkCPTDisplaysShortcode.php#L31	[email protected]	Source CodeVendor
https://www.wordfence.com/threat-intel/vulnerabilities/id/d227d4e4-2899-434c-8b93-8d93a89b1b1b?source=cve	[email protected]	AdvisoryRemedy

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
Sherk Custom Post Type Displays	All versions
CPE No CPEs found in CPE dictionary for this product. Remediation No remediation found in references.

Change History

3 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Mar 21, 2026	New CVE Received	[email protected]