What’s Vulnerable › Vulnerabilities

CVE-2024-5966: Grey Opaque <= 2.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Download-Button Shortcode

• Severity: medium (CVSS 5.4 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: 2024-06-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The Grey Opaque theme for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘url’ parameter within the theme's Download-Button shortcode in all versions up to, and including, 2.0.1 due to insufficient input sanitization and output escaping. 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

• ppfeufer Grey Opaque: through 2.0.1

References

• https://themes.trac.wordpress.org/browser/grey-opaque/2.0.1/functions-shortcodes.php#L34
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2f4888e1-98b3-48d9-a2d8-416eae447a32?source=cve
• https://themes.trac.wordpress.org/browser/grey-opaque/2.0.1/functions-shortcodes.php#L34
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2f4888e1-98b3-48d9-a2d8-416eae447a32?source=cve

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