Short Comment Filter <= 2.2 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Minimum Count' Setting

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Summary

CVECVE-2026-3362
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-22 09:16:21 UTC
Updated2026-04-22 09:16:21 UTC
DescriptionThe Short Comment Filter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Minimum Count' settings field in all versions up to and including 2.2. This is due to insufficient input sanitization (no sanitize callback on register_setting) and missing output escaping (no esc_attr() on the echoed value in the input's value attribute). The option value is stored via update_option() and rendered unescaped in an HTML attribute context. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in the settings page that will execute whenever a user accesses that page. This is particularly impactful in WordPress multisite installations or when DISALLOW_UNFILTERED_HTML is set, where administrators are not granted the unfiltered_html capability.

Risk And Classification

Primary CVSS: v3.1 4.4 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
3.1CNADECLARED4.4MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Itsananderson Short Comment Filter affected 2.2 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/short-comment-filter/trunk/views/settings.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/4ba46475-bf54-49a8-9b0e-fae3f... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filt... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filt... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/trunk/classes/short-comment-filt... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/classes/short-comment-f... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/short-comment-filter/tags/2.2/views/settings.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Muhammad Nur Ibnu Hubab (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-04-21T19:16:14.000ZDisclosed
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