CVE-2026-65643 Code injection in cPanel
Remote authenticated users can execute arbitrary code as root via eval injection in cPanel, requiring immediate upgrade.
- 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-2026-65643?
CVE-2026-65643 is a high-severity code injection vulnerability in Cpanel Cpanel, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Eval injection in cPanel 11.138.0.0 and earlier allows remote authenticated users to execute arbitrary code as root.
Weakness: CWE-95
Which versions are affected by CVE-2026-65643?
It affects 1 product.
Products include Cpanel Cpanel.
How do I fix CVE-2026-65643?
No fix has been published for CVE-2026-65643 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-2026-65643 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-65643 exists.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Cpanel Cpanel
- CVE-2026-41940 WebPros cPanel & WHM and WP2 (WordPress Squared) Missing Authentication for Critical Function
- CVE-2003-1425 guestbook.cgi in cPanel 5.0 allows remote attackers to execute arbitrary commands via the template parameter.
- CVE-2004-1769 Code injection in n/a
- CVE-2004-1770 Command injection in n/a
- CVE-2020-26098 Command injection in n/a
Sources
Also known as GHSA-3x5r-hcq6-ggfv.