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CVE-2026-4011

6.4 · MEDIUM

The Power Charts Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the [pc] shortcode in all versions up to, and including, 0.1.0.

Published Apr 15, 2026CWE-79EPSS 0.33%

Overview

CVE-2026-4011 is a medium-severity vulnerability. It was published on April 15, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

The Power Charts Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' parameter of the [pc] shortcode in all versions up to, and including, 0.1.0. This is due to insufficient input sanitization and output escaping on the 'id' shortcode attribute. Specifically, in the pc_shortcode() function, the 'id' attribute is extracted from user-supplied shortcode attributes and directly concatenated into an HTML div element's class attribute without any escaping or sanitization at line 62. The resulting HTML is then passed through html_entity_decode() before being returned, further undermining any potential safety. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refplugins.trac.wordpress.org/browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L40Refplugins.trac.wordpress.org/browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L62Refplugins.trac.wordpress.org/browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L40Refplugins.trac.wordpress.org/browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L62Refwww.wordfence.com/threat-intel/vulnerabilities/id/ea41d391-ba8d-43d9-8eda-69ac28c49328?source=cve

How CyberStrike helps

Frequently asked questions

What is CVE-2026-4011?

CVE-2026-4011 is a medium-severity vulnerability. It was published on April 15, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-4011?

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-4011?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-4011?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-4011 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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