CVE-2026-15810
HighCVSS 8.7Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
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 allows an attacker to execute arbitrary JavaScript via a maliciously crafted URL, leading to administrative account takeover. This affects Looker-hosted and Self-hosted instances; Looker-hosted instances are already patched, while Self-hosted instances require an upgrade.
Risk Assessment
Risk of administrative account takeover, potentially leading to full control over the Looker instance and access to sensitive data.
Recommendation
Upgrade Self-hosted instances to 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+.
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Original NVD description (English source)
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+.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

