High severity · published Jul 24, 2026
CVE-2026-15810
Cross-Site Scripting (XSS) in Looker allows Admin Account Takeover
8.7
CVSS
0.5%
EPSS
No
On KEV
Description
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+.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LO
Looker · Google Cloud
before 25.6.103; before 25.12.65; before 25.18.68; before 26.0.66; before 26.2.47; before 26.4.36; +10 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15810
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-15810
docs.cloud.google.com
https://docs.cloud.google.com/looker/docs/release-notes#July_22_2026
docs.cloud.google.com
https://docs.cloud.google.com/support/bulletins#gcp-2026-049
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