CVE-2026-40783 WordPress Blocksy Companion Pro plugin <= 2.1.37 - Remote Code Execution (RCE) vulnerability
A contributor can achieve remote code execution in the Blocksy Companion Pro WordPress plugin, requiring an upgrade to secure the site.
- 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-2026-40783?
CVE-2026-40783 is a critical code injection vulnerability in Creative Themes Blocksy Companion Pro, published on 17 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Contributor Remote Code Execution (RCE) in Blocksy Companion Pro <= 2.1.37 versions.
Weakness: CWE-94
Which versions are affected by CVE-2026-40783?
How do I fix CVE-2026-40783?
No fix has been published for CVE-2026-40783 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-40783 being exploited?
There is no known exploitation of CVE-2026-40783 in the wild and no public exploit code.
Sources
Also known as GHSA-9px2-42wj-2333.