Vulnerability · Published Nov 20, 2025 · Assigned by GoogleCloud
CVE-2025-12414Looker account compromise via punycode homograph attack
Critical 9.2
In plain English
A critical-severity authentication bypass by spoofing in Looker from Google Cloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 32% of all known vulnerabilities).
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Google Cloud | Looker | 0 – before 24.12.1000 – before 24.18.1930 – before 25.0.690 – before 25.6.570 – before 25.8.390 – before 25.10.220 – before 25.12.0 |
| Google Cloud | Looker | 0 – before 24.12.1000 – before 24.18.1930 – before 25.0.690 – before 25.6.570 – before 25.8.390 – before 25.10.220 – before 25.12.0 |
Weakness: CWE-290 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/U:Amber