CVE-2026-10770 Anti-Spam by CleanTalk - Moderately critical - Cross site scripting - SA-CONTRIB-2026-042

Medium 6.1 Published Updated

Reflected XSS in Drupal Anti-Spam by CleanTalk allows attackers to inject scripts, potentially leading to code execution.

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-2026-10770?

CVE-2026-10770 is a medium-severity cross-site scripting vulnerability in Drupal Anti-Spam by CleanTalk, published on 10 Jul 2026. 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 Anti-Spam by CleanTalk allows Reflected XSS. This issue affects Anti-Spam by CleanTalk versions: from 0.0.0 to 9.7.1.

Weakness: CWE-79

Which versions are affected by CVE-2026-10770?

It affects 1 product.

Linux distribution packages (1)
drupal/cleantalk Packagist:https://packages.drupal.org/8All versions9.7.1

Products include Cleantalk Anti-Spam.

How do I fix CVE-2026-10770?

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-2026-10770 being exploited?

There is no known exploitation of CVE-2026-10770 in the wild and no public exploit code.

Sources

Also known as DRUPAL-CONTRIB-2026-042, GHSA-fhcj-f666-rhjr.

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