CVE-2026-58591 Drupal CVE debrief

Who should care

Users of Drupal Colorbox versions from 0.0.0 to 2.1.5 and from 0.0.0 to 2.2.0 should be aware of this Cross-Site Scripting (XSS) vulnerability and take necessary actions to mitigate potential risks. This includes administrators of Drupal installations using the Colorbox module, security teams monitoring for vulnerabilities in their tech stack, and developers responsible for maintaining and updating Drupal modules.

Technical summary

The CVE-2026-58591 vulnerability is an Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) issue in Drupal Colorbox. This vulnerability affects Colorbox versions from 0.0.0 to 2.1.5 and from 0.0.0 to 2.2.0. The vulnerability allows Cross-Site Scripting (XSS) attacks, which can lead to unauthorized execution of scripts on affected web pages. Users of affected versions should apply patches or updates to mitigate this vulnerability.

Defensive priority

Medium priority for users of affected Drupal Colorbox versions due to potential for Cross-Site Scripting (XSS) attacks. The priority is medium because while the vulnerability can lead to significant security risks, applying patches or updates can effectively mitigate these risks.

Recommended defensive actions

• Inventory and verify versions of Drupal Colorbox in use
• Apply vendor patches or updates for Drupal Colorbox to version 2.1.6 or later, or 2.2.1 or later
• Implement compensating controls such as Web Application Firewalls (WAFs) to detect and prevent XSS attacks
• Monitor for suspicious activity and exception tracking related to Drupal Colorbox
• Review and update security configurations for affected deployments

Evidence notes

Evidence is limited; primary official records indicate a Cross-Site Scripting (XSS) vulnerability in Drupal Colorbox versions from 0.0.0 to 2.1.5 and from 0.0.0 to 2.2.0. Further verification is recommended through reviewing official advisories, checking system logs for suspicious activity, and verifying the integrity of deployed Colorbox versions.

Official resources