Qi Blocks <= 1.4.9 — Insecure Direct Object Reference to Authenticated (Author+) Arbitrary Style Modification via 'page_id' Parameter

Am I affected?

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

What to do

1. Update to version 1.5.0, or a newer patched version
2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
3. Watch Qi Blocks to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Dmitrii Ignatyev.

The Qi Blocks plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.4.9 via the 'page_id' parameter due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with author-level access and above, to modify the stored Qi Blocks styles of arbitrary posts, templates, or widgets they do not own — including site-wide surfaces via the reserved 'template' and 'widget' page_id values — enabling unauthorized frontend defacement, content hiding, and degradation of any page on the site. The endpoint's permission_callback checks only the generic edit_posts and publish_posts capabilities, meaning any user with the built-in Author role satisfies the check regardless of post ownership.

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 30, 2026

   CVE published

   Severity medium, CVSS 4.3

2. Nov 13, 2026

   Record last updated