CVE-2026-6703 Missing authorization in Responsive Blocks – Page Builder for Blocks & Patterns
Authenticated contributors can modify global site-wide plugin configuration options due to missing authorization checks in the Responsive Blocks WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-6703?
CVE-2026-6703 is a medium-severity missing authorization vulnerability in cyberchimps Responsive Blocks – Page Builder for Blocks & Patterns, published on 21 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Responsive Blocks – Page Builder for Blocks & Patterns plugin for WordPress is vulnerable to unauthorized access in all versions up to, and including, 2.2.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to modify global site-wide plugin configuration options, including toggling custom CSS, disabling blocks, changing layout defaults such as content width, container padding, and container gap, and altering auto-block-recovery behavior.
Weakness: CWE-862
Which versions are affected by CVE-2026-6703?
How do I fix CVE-2026-6703?
No fix has been published for CVE-2026-6703 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-6703 being exploited?
There is no known exploitation of CVE-2026-6703 in the wild and no public exploit code.
Sources
Also known as GHSA-47x2-3wfg-624p.