What’s Vulnerable › Vulnerabilities

CVE-2026-4011: Power Charts <= 0.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'id' Shortcode Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-15 · updated 2026-06-17
• Weakness: CWE-79

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.

Affected products

• dgwyer Power Charts – Responsive Beautiful Charts & Graphs: through 0.1.0

References

• https://plugins.trac.wordpress.org/browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L40
• https://plugins.trac.wordpress.org/browser/wpgo-power-charts-lite/tags/0.1.0/classes/power-charts-shortcodes.php#L62
• https://plugins.trac.wordpress.org/browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L40
• https://plugins.trac.wordpress.org/browser/wpgo-power-charts-lite/trunk/classes/power-charts-shortcodes.php#L62
• https://www.wordfence.com/threat-intel/vulnerabilities/id/ea41d391-ba8d-43d9-8eda-69ac28c49328?source=cve

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