CVE-2026-19904 SourceCodester Online Book Store System System Settings index.php site_settings cross site scripting
Remote attackers can inject malicious scripts into the site settings page, potentially compromising user sessions or executing code.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-19904?
CVE-2026-19904 is a medium-severity cross-site scripting vulnerability in SourceCodester Online Book Store System, published on 15 Aug 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
A vulnerability was found in SourceCodester Online Book Store System 1.0. This vulnerability affects unknown code of the file /admin/index.php?page=site_settings of the component System Settings Module. The manipulation results in cross site scripting. The attack can be executed remotely. The exploit has been made public and could be used.
Which versions are affected by CVE-2026-19904?
How do I fix CVE-2026-19904?
No fix has been published for CVE-2026-19904 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-2026-19904 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19904 exists.
Sources
Also known as GHSA-x4gr-3xwc-cpj6.