CVE-2003-0521 Cross-site scripting in n/a
Remote attackers can inject scripts via URLs logged in cPanel, potentially gaining administrator privileges through reflected XSS in error or visitor logs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2003-0521?
CVE-2003-0521 is a medium-severity cross-site scripting vulnerability in Cpanel Cpanel, published on 10 Jul 2003. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Cross-site scripting (XSS) vulnerability in cPanel 6.4.2 allows remote attackers to insert arbitrary HTML and possibly gain cPanel administrator privileges via script in a URL that is logged but not properly quoted when displayed via the (1) Error Log or (2) Latest Visitors screens.
Which versions are affected by CVE-2003-0521?
It affects 1 product.
Products include Cpanel Cpanel.
How do I fix CVE-2003-0521?
No fix has been published for CVE-2003-0521 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-2003-0521 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2003-0521 exists.
Public exploit code: 1 Exploit-DB entry.
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-g78q-qwhg-6p5x.