What’s Vulnerable › Vulnerabilities

CVE-2026-3639: PPWP – Password Protect Pages <= 1.9.21 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-08-28
• Weakness: CWE-79

Description

The PPWP – Password Protect Pages plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's `ppwp` shortcode attributes in all versions up to, and including, 1.9.21 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.

Affected products

• buildwps PPWP – Password Protect Pages: through 1.9.21

References

• https://plugins.trac.wordpress.org/browser/password-protect-page/tags/1.9.15/includes/services/class-ppw-shortcode.php#L582
• https://plugins.trac.wordpress.org/browser/password-protect-page/tags/1.9.15/includes/views/shortcode/view-ppw-restriced-content-form.php#L18
• https://plugins.trac.wordpress.org/browser/password-protect-page/trunk/includes/services/class-ppw-shortcode.php#L582
• https://plugins.trac.wordpress.org/browser/password-protect-page/trunk/includes/views/shortcode/view-ppw-restriced-content-form.php#L18
• https://plugins.trac.wordpress.org/changeset/3642939/password-protect-page
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fpassword-protect-page/tags/1.9.19&new_path=%2Fpassword-protect-page/tags/1.9.20
• https://www.wordfence.com/threat-intel/vulnerabilities/id/7fa5206e-8888-4872-b4bd-91fe5628498c?source=cve

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