Vulnerability · Published Jul 10, 2026 · Assigned by drupal
CVE-2026-58588Drupal Canvas - Moderately critical - Improper validation - SA-CONTRIB-2026-066
Medium 6.1
In plain English
A medium-severity cross-site scripting in Drupal Canvas from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 82.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Drupal Canvas allows Cross-Site Scripting (XSS). This issue affects Drupal Canvas versions: from 0.0.0 to 1.4.2, from 1.5.0 to 1.5.2, from 1.6.0 to 1.6.1, from 1.7.0 to 1.7.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/canvas | 1.4.2, 1.5.2, 1.6.1, 1.7.1 | DRUPAL-CONTRIB-2026-066 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | Drupal Canvas | 0.0.0 – before 1.4.21.5.0 – before 1.5.21.6.0 – before 1.6.11.7.0 – before 1.7.1 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N