Easy Image Collage <= 1.13.6 — Authenticated (Author+) Stored Cross-Site Scripting via 'grid[properties][borderColor]' and 'grid[images][N][attachment_url]' Parameters

Am I affected?

• Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Easy Image Collage.
• No admin access? Run a passive check of your site. It reads public files only.

What to do

1. Update to version 2.0.0, or a newer patched version
2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
3. Watch Easy Image Collage to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to gnsehfvlr.

The Easy Image Collage plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'grid[properties][borderColor]' and 'grid[images][N][attachment_url]' Parameters in all versions up to, and including, 1.13.6 due to insufficient input sanitization and output escaping. 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. Because the data is stored via update_post_meta() rather than wp_insert_post() post content, WordPress's unfiltered_html restriction does not apply, meaning Authors cannot be blocked from this attack path by capability controls alone.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

• Advisorywordfence.com

Related CVEs

Timeline

1. Jun 9, 2026

   CVE published

   Severity medium, CVSS 6.4

2. Nov 13, 2026

   Record last updated