What’s Vulnerable › Vulnerabilities

CVE-2024-6870: Responsive Lightbox & Gallery <= 2.4.7 - Authenticated (Author+) Stored Cross-Site Scripting via File Upload

• 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: 2024-08-22 · updated 2026-06-17
• Weakness: CWE-79

Description

The Responsive Lightbox & Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via file uploads in all versions up to, and including, 2.4.7 due to insufficient input sanitization and output escaping affecting the rl_upload_image AJAX endpoint. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the 3gp2 file.

Affected products

• dfactory Responsive Lightbox & Gallery: before 2.4.8 — fixed in 2.4.8

How to fix

Upgrade to a fixed version: dfactory Responsive Lightbox & Gallery 2.4.8. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/responsive-lightbox/tags/2.4.7/includes/class-remote-library.php#L261
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3137531%40responsive-lightbox&new=3137531%40responsive-lightbox&sfp_email=&sfph_mail=
• https://wordpress.org/plugins/responsive-lightbox/#developers
• https://www.wordfence.com/threat-intel/vulnerabilities/id/e4d55309-d178-4b3d-9de6-2cf2769b76fe?source=cve

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