CVE-2026-9629
Published: Sat, 13 Jun 2026 08:16
Summary
The Canvas plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tag' parameter in all versions up to, and including, 2.5.2 due to insufficient input sanitization and output escap
Details
The Canvas plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tag' parameter in all versions up to, and including, 2.5.2 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.
Are YOU affected by CVE-2026-9629?
5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether CVE-2026-9629 (and any other live CVE) applies. Anonymous, no signup.
curl https://mindsparkstack.com/scan.sh | bash
References
- https://plugins.trac.wordpress.org/browser/canvas/tags/2.5.2/components/basic-elements/block-section-heading/render.php#L13
- https://plugins.trac.wordpress.org/browser/canvas/tags/2.5.2/components/basic-elements/block-section-heading/render.php#L32
- https://plugins.trac.wordpress.org/browser/canvas/tags/2.5.2/gutenberg/custom-blocks/index.php#L798
- https://plugins.trac.wordpress.org/changeset/3553553/canvas/trunk/components/basic-elements/block-section-heading/render.php
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fcanvas/tags/2.5.2&new_path=%2Fcanvas/tags/2.5.3
- https://www.wordfence.com/threat-intel/vulnerabilities/id/f93d70e4-01c5-44e8-b7d5-0837bee53b8d?source=cve
StackPatch runs this match against YOUR installed packages every hour
Free (3 servers) / from $9/mo (14-day free trial) / Solo $9/mo / Pro $29/mo / Team $79/mo. Indie pricing.