Vulnerability · Published Oct 30, 2026 · Assigned by drupal
CVE-2026-107263Gutenberg - Moderately critical - Access bypass - SA-CONTRIB-2026-202
Medium 5.4
In plain English
A medium-severity incorrect authorization in Gutenberg from Drupal. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 93.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Incorrect Authorization vulnerability in Drupal Gutenberg allows Forceful Browsing. This issue affects Gutenberg versions: from 0.0.0 to 2.15.0, from 3.0.0 to 3.0.7.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/gutenberg | 2.15.0, 3.0.7 | DRUPAL-CONTRIB-2026-202 |
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N