CVE-2017-18420 Cross-site scripting in n/a
Attackers can inject malicious scripts via WHM cPAddons processing, potentially compromising user sessions and data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-18420?
CVE-2017-18420 is a medium-severity cross-site scripting vulnerability in Cpanel Cpanel, published on 2 Aug 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
cPanel before 66.0.2 allows stored XSS during WHM cPAddons processing (SEC-269).
Weakness: CWE-79
Which versions are affected by CVE-2017-18420?
It affects 1 product.
Products include Cpanel Cpanel.
How do I fix CVE-2017-18420?
No fix has been published for CVE-2017-18420 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2017-18420 being exploited?
There is no known exploitation of CVE-2017-18420 in the wild and no public exploit code.
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-577g-h2cr-64r9.