CVE-2026-3191: Minify HTML <= 2.1.12 - Cross-Site Request Forgery to Plugin Settings Update

Severity: medium (CVSS 5.4 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: 2026-03-31 · updated 2026-07-25
Weakness: CWE-352

Description

The Minify HTML plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.1.12. This is due to missing or incorrect nonce validation on the 'minify_html_menu_options' function. This makes it possible for unauthenticated attackers to update plugin settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

teckel Minify HTML: through 2.1.12

References

https://plugins.trac.wordpress.org/browser/minify-html-markup/tags/2.1.12/minify-html.php#L139
https://plugins.trac.wordpress.org/changeset/3486011/minify-html-markup
https://www.wordfence.com/threat-intel/vulnerabilities/id/fe14b92b-1784-4083-9b9f-23d7f69a3215?source=cve

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