What’s Vulnerable › Vulnerabilities

CVE-2026-15336: Catch Themes Demo Import <= 3.3 - Missing Authorization to Authenticated (Subscriber+) Single Plugin Installation via 'activate_plugin' Parameter

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-16 · updated 2026-07-17
• Weakness: CWE-862

Description

The Catch Themes Demo Import plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 3.3. This is due to the catch_themes_demo_import_activate_plugin() function, hooked on admin_init when the activate_plugin GET parameter is present, calling Plugin_Upgrader::install() to download and install a plugin from WordPress.org before performing the current_user_can('activate_plugins') capability check. This makes it possible for authenticated attackers, with subscriber-level access and above, to install the hardcoded 'essential-content-types' plugin from the WordPress.

Affected products

• Catch Themes Demo Import: through 3.3

References

• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.2/inc/demo-importer.php#L135
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.2/inc/demo-importer.php#L136
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.2/inc/demo-importer.php#L233
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.2/inc/demo-importer.php#L235
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.3/inc/demo-importer.php#L135
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.3/inc/demo-importer.php#L136
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.3/inc/demo-importer.php#L233
• https://plugins.trac.wordpress.org/browser/catch-themes-demo-import/tags/3.3/inc/demo-importer.php#L235
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3604098%40catch-themes-demo-import&new=3604098%40catch-themes-demo-import
• https://www.wordfence.com/threat-intel/vulnerabilities/id/12c7661c-0700-4370-9272-d8a19b17006e?source=cve

Get alerted when CVE-2026-15336 or the next vulnerability affects your stack