High severity · published Jul 3, 2026
CVE-2026-9148
Comments <= 7.6.56 - Unauthenticated Stored Cross-Site Scripting via 'Website' Field
7.2
CVSS
0.5%
EPSS
No
On KEV
Description
The Comments – wpDiscuz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the guest commenter 'Website' field in versions up to, and including, 7.6.56 This is due to insufficient output escaping in the getCommentAuthor() function, which interpolates the stored comment_author_url value directly into single-quoted HTML attributes without applying esc_url() or esc_attr(). This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CW
Comments – wpDiscuz · advancedcoding
through 7.6.56 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-9148
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-9148
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.48/forms/wpdFormAttr/Field/DefaultField/Website.php#L119
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.48/forms/wpdFormAttr/Tools/Sanitizer.php#L14
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.48/utils/class.WpdiscuzHelper.php#L1615
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.48/utils/class.WpdiscuzHelper.php#L1619
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.54/forms/wpdFormAttr/Field/DefaultField/Website.php#L119
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wpdiscuz/tags/7.6.54/forms/wpdFormAttr/Tools/Sanitizer.php#L14
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5.3
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