CVE-2026-15810: Google Cloud Looker

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

A Cross-Site Scripting (XSS) vulnerability in Google Cloud Looker versions prior to 25.6.103, 25.12.65, 25.18.68, 26.0.66, 26.2.47, 26.4.36, 26.6.28, and 26.8.7 on Looker-hosted and Self-hosted allows an attacker to execute arbitrary JavaScript leading to administrative account takeover using a maliciously crafted URL. Looker-hosted and Self-hosted were found to be vulnerable. This issue has already been mitigated for Looker-hosted instances. No user action is required for these. Self-hosted instances must be upgraded to the patched versions: 25.6.103+, 25.12.65+, 25.18.68+, 26.0.66+, 26.2.47+, 26.4.36+, 26.6.28+, or 26.8.7+.

Affected products

• Google Cloud Looker: before 25.6.103 (fixed in 25.6.103); before 25.12.65 (fixed in 25.12.65); before 25.18.68 (fixed in 25.18.68); before 26.0.66 (fixed in 26.0.66); before 26.2.47 (fixed in 26.2.47); before 26.4.36 (fixed in 26.4.36); …

Published 2026-07-24. Last modified 2026-07-27.