Medium severity · published Apr 15, 2026
CVE-2026-6293
Inquiry form to posts or pages <= 1.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting via 'inq_header' Parameter
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
The Inquiry Form to Posts or Pages plugin for WordPress is vulnerable to Cross-Site Request Forgery leading to Stored Cross-Site Scripting in version 1.0. This is due to missing nonce validation on the plugin settings update handler, combined with insufficient input sanitization on all user-supplied fields and missing output escaping when rendering stored values. The settings handler fires solely on the presence of `$_POST['inq_hidden'] == 'Y'` with no call to `check_admin_referer()` and no WordPress nonce anywhere in the form or handler. This makes it possible for unauthenticated attackers to inject arbitrary web scripts via a forged request that tricks a logged-in Administrator into visiting a malicious page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IF
Inquiry form to posts or pages · udamadu
through 1.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-6293
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-6293
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/tags/1.0/inq_form.php#L180
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/tags/1.0/inq_form.php#L60
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/tags/1.0/inq_form.php#L63
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/tags/1.0/inquery_form_to_posts_or_pages.php#L139
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/trunk/inq_form.php#L180
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/inquiry-form-to-posts-or-pages/trunk/inq_form.php#L60
More from Inquiry form to posts or pages
4.4
CVE-2026-5169
Inquiry form to posts or pages <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Form Header Field
