Cross-Site Scripting (XSS) in Looker allows Admin Account Takeover
Summary
| CVE | CVE-2026-15810 |
|---|---|
| State | PUBLISHED |
| Assigner | GoogleCloud |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-24 12:16:47 UTC |
| Updated | 2026-07-27 20:37:16 UTC |
| 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+. |
Risk And Classification
Primary CVSS: v4.0 8.7 HIGH from f45cbf4e-4146-4068-b7e1-655ffc2c548c
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
EPSS: 0.002680000 probability, percentile 0.187170000 (date 2026-07-27)
Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | f45cbf4e-4146-4068-b7e1-655ffc2c548c | Secondary | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/C... |
| 4.0 | CNA | CVSS | 8.7 | HIGH | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/U:Amber |
CVSS v4.0 Breakdown
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Amber
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Google Cloud | Looker | affected 25.6.103 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 25.12.65 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 25.18.68 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 26.0.66 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 26.2.47 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 26.4.36 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 26.6.28 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 26.8.7 custom | Looker-hosted |
| CNA | Google Cloud | Looker | affected 25.6.103 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 25.12.65 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 25.18.68 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 26.0.66 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 26.2.47 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 26.4.36 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 26.6.28 custom | Self-hosted |
| CNA | Google Cloud | Looker | affected 26.8.7 custom | Self-hosted |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| docs.cloud.google.com/support/bulletins | f45cbf4e-4146-4068-b7e1-655ffc2c548c | docs.cloud.google.com | |
| docs.cloud.google.com/looker/docs/release-notes | f45cbf4e-4146-4068-b7e1-655ffc2c548c | docs.cloud.google.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Sivanesh Ashok (en)
CNA: Sreeram KL (en)
Additional Advisory Data
Solutions
CNA: This vulnerability has been mitigated for Looker-hosted instances, and no user action is required. For Self-hosted Looker instances, customers should upgrade to one of the patched versions or later: 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+.