CVE-2026-6701: addfreespace <= 0.1.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting via Settings Page

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-05 · updated 2026-06-17
Weakness: CWE-352

Description

The addfreespace plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.1.3. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

kazunii addfreespace: through 0.1.3

References

https://plugins.trac.wordpress.org/browser/addfreespace/tags/0.1.3/addfreespace.php#L312
https://plugins.trac.wordpress.org/browser/addfreespace/tags/0.1.3/addfreespace.php#L45
https://plugins.trac.wordpress.org/browser/addfreespace/tags/0.1.3/addfreespace_functions.php#L30
https://plugins.trac.wordpress.org/browser/addfreespace/tags/0.1.3/addfreespace_functions.php#L59
https://plugins.trac.wordpress.org/browser/addfreespace/tags/0.1.3/addfreespace_functions.php#L83
https://plugins.trac.wordpress.org/browser/addfreespace/trunk/addfreespace.php#L312
https://plugins.trac.wordpress.org/browser/addfreespace/trunk/addfreespace.php#L45
https://plugins.trac.wordpress.org/browser/addfreespace/trunk/addfreespace_functions.php#L30
https://plugins.trac.wordpress.org/browser/addfreespace/trunk/addfreespace_functions.php#L59
https://plugins.trac.wordpress.org/browser/addfreespace/trunk/addfreespace_functions.php#L83
https://www.wordfence.com/threat-intel/vulnerabilities/id/40eaeb28-c721-4977-951d-582b7dc2bd12?source=cve

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