Description
The Envira Gallery Lite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the REST API in versions up to and including 1.12.4. This is due to insufficient input sanitization in the update_gallery_data() function and improper output escaping in the gallery_init() function. The sanitize_config_values() function only sanitizes the justified_gallery_theme and justified_row_height parameters, but does not sanitize the arrows parameter. When the arrows value is output in the inline JavaScript configuration, it uses esc_attr() which is designed for HTML attribute contexts, not JavaScript contexts, allowing JavaScript expression injection. 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 an injected page.
References6
- plugins.trac.wordpress.org/browser/envira-gallery-lite/tags/1.1…
- plugins.trac.wordpress.org/browser/envira-gallery-lite/tags/1.1…
- plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/in…
- plugins.trac.wordpress.org/browser/envira-gallery-lite/trunk/in…
- plugins.trac.wordpress.org/changeset/3514026/envira-gallery-lit…
- www.wordfence.com/threat-intel/vulnerabilities/id/d2b1e973-f22d…
Metrics
- CVSS 3.1
-
6.4
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 0% percentile: 29 · as of 14 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
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