drupal/externalauth - SA-CONTRIB-2026-098
This module enables you to authenticate Drupal users against external identity providers.
The module does not sufficiently ensure exact matching of externally supplied identity values when storing and looking up authentication mappings under certain database collation configurations.
This vulnerability is minimally mitigated by the fact that it affects only sites using impacted MySQL or MariaDB collation settings for the module’s authentication mapping storage. Affected collations are quite common so all sites are encouraged to upgrade.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/externalauth | < 2.0.13 | 2.0.13 |
| Drupal module | drupal/externalauth | < 2.0.13 | 2.0.13 |
References
- Weakness (CWE)
-- Platform
- Composer, Drupal
- Package
drupal/externalauth- Disclosed
- 12.08.2026
- Updated
- 11.10.2026 12:18
Sources and licenses
OSV / GitHub Advisory Database - DRUPAL-CONTRIB-2026-098 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: drupal/externalauth
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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