CVE-2026-15810: Cross-Site Scripting (XSS) in Looker allows Admin Account Takeover
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-15810?
CVE-2026-15810 has a risk score of 76, indicating a significant security vulnerability.
How do I fix CVE-2026-15810?
To mitigate CVE-2026-15810, upgrade Google Cloud Looker 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.
What systems are affected by CVE-2026-15810?
CVE-2026-15810 affects Google Cloud Looker versions prior to specified secure versions on both Looker-hosted and Self-hosted instances.
What impact does CVE-2026-15810 have?
CVE-2026-15810 allows attackers to execute arbitrary JavaScript code, potentially leading to administrative account takeover.
What type of vulnerability is CVE-2026-15810?
CVE-2026-15810 is classified as a Cross-Site Scripting (XSS) vulnerability.