WordPress security changelog
MEDIUM CVE-2026-3362 Deferred

Short Comment Filter: Cross-site scripting

Short Comment Filter is affected by cross-site scripting. Exploitation requires at least administrator-level access. Injected script can execute in the affected site's origin when the vulnerable output is viewed. The published affected range is <= 2.2.

CVE / CNA score 4.4 CVSS 3.1 · security@wordfence.com
NVD score Pending NVD has not published its own CVSS assessment.
Component
Short Comment Filter
Plugin slug
short-comment-filter
Affected
<= 2.2
Safe version
> 2.2
Published
Apr 22, 2026
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Apr 22, 2026 and is one of 1 known issue for this plugin.

What to do

Update, patch or deactivate.

Update Short Comment Filter to a release after 2.2, or disable and remove it until a fixed version is available.

A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The 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.

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

References

Primary and upstream sources