Vulnerability Report
Plugin Medium Patch path listed CVE-2021-24837

Passster – Password Protection <= 3.5.5.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

The Passster – Password Protection plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in versions up to, and including, 3.5.5.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page

Quick Answer

CVE-2021-24837 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Passster – Password Protect Pages and Content. It affects Versions up to 3.5.5.7 and is fixed in 3.5.5.8.

Published
Dec 29, 2022
Last Updated
Jan 22, 2024
Slug
content-protector
Operational Summary

What the operator needs to know

Patch Status
Patched release is available
Remediation
Update to version 3.5.5.8, or a newer patched version
Operator Briefing

CVE-2021-24837 is tracked for the Plugin Passster – Password Protect Pages and Content as medium severity with CVSS 6.4. The affected range is Versions up to 3.5.5.7. Update Passster – Password Protect Pages and Content to 3.5.5.8 or newer where that version is compatible with the site.

Issue Type
Stored Cross-Site Scripting
Primary Fixed Version
3.5.5.8
Primary Affected Range
Versions up to 3.5.5.7
Tracking ID
CVE-2021-24837
Detailed Metadata
Software Type Plugin
Software Slug
content-protector View on wordpress.org
CVE CVE-2021-24837
Patched Versions
3.5.5.8
Affected Versions
Versions up to 3.5.5.7
Related CVE Cluster

Related CVEs for Passster – Password Protect Pages and Content

These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.

Medium CVE-2025-14865 4.2.25 Jan 27, 2026
CVE-2025-14865 Passster – Password Protect Pages and Content Stored Cross-Site Scripting

Passster – Password Protect Pages and Content <= 4.2.24 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Medium CVE-2025-57926 4.2.19 Sep 22, 2025
CVE-2025-57926 Passster – Password Protect Pages and Content Stored Cross-Site Scripting

Passster <= 4.2.18 - Authenticated (Contributor+) Stored Cross-Site Scripting

Medium CVE-2024-2026 4.2.6.5 Apr 04, 2024
CVE-2024-2026 Passster – Password Protect Pages and Content Stored Cross-Site Scripting

Passster <= 4.2.6.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via content_protector Shortcode

Medium CVE-2025-64218 4.2.20 Nov 12, 2025
CVE-2025-64218 Passster – Password Protect Pages and Content Sensitive Information Exposure

Passster <= 4.2.19 - Unauthenticated Information Exposure

Medium CVE-2024-11282 4.2.11 Jan 06, 2025
CVE-2024-11282 Passster – Password Protect Pages and Content Sensitive Information Exposure

Passster – Password Protect Pages and Content <= 4.2.10 - Unauthenticated Content Restriction Bypass to Sensitive Information Exposure

Medium CVE-2024-0616 4.2.6.3 Feb 08, 2024
CVE-2024-0616 Passster – Password Protect Pages and Content Sensitive Information Exposure

Passster – Password Protect Pages and Content <= 4.2.6.2 - Missing Authorization to Sensitive Information Exposure

Medium CVE-2021-24881 3.5.5.9 Dec 29, 2022
CVE-2021-24881 Passster – Password Protect Pages and Content Sensitive Information Exposure

Passster <= 3.5.5.8 - Missing Authentication leading to Sensitive Information Disclosure (Private Post Leakage)

Medium CVE-2022-3206 3.5.5.5.2 Sep 21, 2022
CVE-2022-3206 Passster – Password Protect Pages and Content Vulnerability

Passster <= 3.5.5.5.1 - Insecure Password Storage to Sensitive Data Exposure

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