PatchSiren cyber security CVE debrief

CVE-2026-9019 brechtvds CVE debrief

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.

Vendor: brechtvds
Product: Easy Image Collage
CVSS: MEDIUM 6.4
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-10
Original CVE updated: 2026-06-10
Advisory published: 2026-06-10
Advisory updated: 2026-06-10

Who should care

Users of the Easy Image Collage plugin for WordPress, particularly those with author-level access and above, should be aware of this vulnerability and take steps to mitigate it.

Technical summary

The vulnerability exists in the Easy Image Collage plugin for WordPress, specifically in the handling of 'grid[properties][borderColor]' and 'grid[images][N][attachment_url]' parameters. Insufficient input sanitization and output escaping allow for Stored Cross-Site Scripting attacks.

Defensive priority

MEDIUM

Recommended defensive actions

Update the Easy Image Collage plugin to a version beyond 1.13.6.
Restrict access to the plugin's functionality for users with author-level access and above.
Implement additional security measures, such as input validation and output encoding, to prevent similar vulnerabilities.

Evidence notes

The CVE-2026-9019 vulnerability was identified in the Easy Image Collage plugin for WordPress. The vulnerability allows for Stored Cross-Site Scripting attacks due to insufficient input sanitization and output escaping.

Sources and references

Verified primary and authoritative sources

CVE-2026-9019 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-9019

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-9019 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-9019

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Source reference
Unverified legacy reference

URL: https://plugins.trac.wordpress.org/browser/easy-image-collage/tags/1.13.6/helpers/ajax.php

[email protected]
Source reference
Unverified legacy reference

URL: https://plugins.trac.wordpress.org/browser/easy-image-collage/tags/1.13.6/helpers/layouts.php

[email protected]
Source reference
Unverified legacy reference

URL: https://plugins.trac.wordpress.org/browser/easy-image-collage/tags/1.13.6/helpers/models/grid.php

[email protected]
Source reference
Unverified legacy reference

URL: https://plugins.trac.wordpress.org/browser/easy-image-collage/tags/1.13.6/helpers/shortcode.php

[email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.