Vulnerability · Published Sep 2, 2026 · Assigned by drupal
CVE-2026-73476External Authentication - Moderately critical - Access bypass - SA-CONTRIB-2026-098
Medium 5.4
In plain English
A medium-severity security flaw in External Authentication 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 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 77.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Improper Handling of Case Sensitivity vulnerability in Drupal External Authentication allows Privilege Escalation. This issue affects External Authentication versions: from 0.0.0 to 2.0.13.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist:https://packages.drupal.org/8 | drupal/externalauth | 2.0.13 | DRUPAL-CONTRIB-2026-098 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Drupal | External Authentication | 0.0.0 – before 2.0.13 |
Weakness: CWE-178 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N