Description
An attacker could take over a Looker account in a Looker instance configured with OIDC authentication, due to email address string normalization.Looker-hosted and Self-hosted were found to be vulnerable.
This issue has already been mitigated for Looker-hosted.
Self-hosted instances must be upgraded as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted.
The versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page https://download.looker.com/ :
* 24.12.100+
* 24.18.193+
* 25.0.69+
* 25.6.57+
* 25.8.39+
* 25.10.22+
* 25.12.0+
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Google Cloud | Looker | < 24.12.100, < 24.18.193, < 25.0.69, < 25.6.57, < 25.8.39, < 25.10.22, < 25.12.0 | 24.12.100 |
Advisories 1
- WID-SEC-2025-2649 Google Cloud Platform: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Nov 20, 2025