CVE-2025-3901 Bootstrap Site Alert - Moderately critical - Cross Site Scripting - SA-CONTRIB-2025-042
An attacker can inject malicious scripts into web pages viewed by other users via the Bootstrap Site Alert module, potentially leading to session hijacking or site defacement.
- 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
- Available
What is CVE-2025-3901?
CVE-2025-3901 is a medium-severity cross-site scripting vulnerability in Drupal Bootstrap Site Alert, published on 23 Apr 2025. 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
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Drupal Bootstrap Site Alert allows Cross-Site Scripting (XSS).This issue affects Bootstrap Site Alert: from 0.0.0 before 1.13.0, from 3.0.0 before 3.0.4.
Weakness: CWE-79
Which versions are affected by CVE-2025-3901?
It affects 1 product.
Linux distribution packages (1)
drupal/bootstrap_site_alert Packagist:https://packages.drupal.org/8 | All versions | 1.13.0, 3.0.4 |
Products include Bootstrap Site Alert Project Bootstrap Site Alert.
How do I fix CVE-2025-3901?
Upgrade to a fixed version.
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-2025-3901 being exploited?
There is no known exploitation of CVE-2025-3901 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1788968317, DRUPAL-CONTRIB-2025-042, GHSA-777m-jvh5-prpj.