CVE-2026-8493 Colorbox Inline - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-036
An attacker can inject malicious scripts into web pages viewed by other users via the Colorbox Inline module, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-8493?
CVE-2026-8493 is a medium-severity cross-site scripting vulnerability in Drupal Colorbox Inline, published on 19 May 2026. Any signed-in user can exploit it over the network, 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 Colorbox Inline allows Cross-Site Scripting (XSS).
This issue affects Colorbox Inline: from 0.0.0 before 2.1.1.
Weakness: CWE-79
Which versions are affected by CVE-2026-8493?
It affects 1 product.
Linux distribution packages (1)
drupal/colorbox_inline Packagist:https://packages.drupal.org/8 | All versions | 2.1.1 |
Products include Colorbox Inline Project Colorbox Inline.
How do I fix CVE-2026-8493?
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-2026-8493 being exploited?
There is no known exploitation of CVE-2026-8493 in the wild and no public exploit code.
Sources
Also known as DRUPAL-CONTRIB-2026-036, GHSA-3mw4-ccpc-mvj9.