What is the CVSS score of CVE-2026-1647?

CVE-2026-1647 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of WordPress are affected by CVE-2026-1647?

Organizations using all should be aware of moderate risk from CVE-2026-1647, a cross-site scripting vulnerability rated CVSS 6.1.

How to fix or mitigate CVE-2026-1647?

Within 30 days: Identify affected systems running all and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

WordPress CVE-2026-1647

EUVD-2026-14173 MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2026-03-21 Wordfence

GHSA-cf92-p96c-2rrg

WordPress XSS

6.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.1 MEDIUM

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

EUVD ID Assigned

Mar 21, 2026 - 04:00 euvd

EUVD-2026-14173

Analysis Generated

Mar 21, 2026 - 04:00 vuln.today

CVE Published

Mar 21, 2026 - 03:26 nvd

MEDIUM 6.1

DescriptionCVE.org

The Comment Genius plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the $_SERVER['PHP_SELF'] parameter in all versions up to, and including, 1.2.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

AnalysisAI

A Reflected Cross-Site Scripting (XSS) vulnerability exists in the Comment Genius WordPress plugin versions up to 1.2.5, where the PHP_SELF server variable is insufficiently sanitized and escaped in output, allowing unauthenticated attackers to inject arbitrary JavaScript code. Affected users are WordPress site administrators and visitors who can be tricked into clicking malicious links. The vulnerability has a CVSS score of 6.1 (Medium) with network accessibility and low complexity, though it requires user interaction to execute.

Technical ContextAI

The vulnerability is a classic Reflected XSS flaw (CWE-79: Improper Neutralization of Input During Web Page Generation) in the Comment Genius plugin (CPE: cpe:2.3:a:basiliskan:comment_genius:*:*:*:*:*:*:*:*). The plugin fails to properly sanitize and escape the PHP_SELF variable when rendering it in HTML output within the cgm-options.php file (as referenced in the source code links). The PHP_SELF variable contains the filename of the currently executing script and is controlled by user input through the request URL. Without proper escaping functions like esc_url() or esc_attr(), an attacker can embed script tags or event handlers directly into this variable, causing them to execute in the victim's browser context. This is a common WordPress vulnerability pattern where developers forget to apply WordPress escaping functions to variables that appear in HTML context.

RemediationAI

WordPress administrators should upgrade Comment Genius to version 1.2.6 or later immediately if a patched version is available, or remove the plugin if no patch has been released. The Wordfence vulnerability advisory at https://www.wordfence.com/threat-intel/vulnerabilities/id/a922c2ad-77ec-4fa8-b997-fa7e85d96590 provides detailed information and should be consulted for the latest patch status. As a temporary mitigation, administrators can restrict plugin functionality or disable the plugin entirely until a patch is confirmed. Additionally, implementing a Web Application Firewall (WAF) such as Wordfence or Sucuri can help detect and block XSS attempts at the network level, and enforcing Content Security Policy (CSP) headers can limit the impact of injected scripts. Since the vulnerability requires user interaction, security awareness training to avoid clicking suspicious links is also recommended as a defense-in-depth measure.