CVE-2025-12414 – Looker account compromise via punycode homograph attack

CVE ID : CVE-2025-12414

Published : Nov. 20, 2025, 10:32 a.m. | 1 hour, 20 minutes ago

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+

Severity: 9.2 | CRITICAL

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