CVE-2025-31687 SpamSpan filter - Moderately critical - Cross Site Scripting - SA-CONTRIB-2025-016
An attacker can inject malicious scripts into web pages via the SpamSpan filter, potentially compromising user sessions or data.
- 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-2025-31687?
CVE-2025-31687 is a medium-severity cross-site scripting vulnerability in Drupal SpamSpan filter, published on 31 Mar 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 SpamSpan filter allows Cross-Site Scripting (XSS).This issue affects SpamSpan filter: from 0.0.0 before 3.2.1.
Weakness: CWE-79
Which versions are affected by CVE-2025-31687?
2 open source packages ship an affected version, including drupal/spamspan. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
drupal/spamspan Packagist | All versions | 3.2.1 |
drupal/spamspan Packagist | All versions | 3.2.1 |
Linux distribution packages (1)
drupal/spamspan Packagist:https://packages.drupal.org/8 | All versions | 3.2.1 |
Products include Drowl Spamspan Filter.
How do I fix CVE-2025-31687?
Upgrade drupal/spamspan to 3.2.1 or later.
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-2025-31687 being exploited?
There is no known exploitation of CVE-2025-31687 in the wild and no public exploit code.
Sources
Also known as CLSA-2026-1788971215, CLSA-2026-1788973403, DRUPAL-CONTRIB-2025-016, GHSA-8r2q-865v-wm8j.