CVE-2025-12739: Cross-Site Scripting (XSS) in Looker's Extension Loader leading to Admin Account Compromise
Google Cloud · Looker
Vendor fix available · Affected: Google Cloud Looker · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 26% of scored CVEs
DescriptionCVE.org
An attacker with viewer permissions in Looker could craft a malicious URL that, when opened by a Looker admin, would execute an attacker-supplied script. Exploitation required at least one Looker extension installed on the instance. 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 as soon as possible. This vulnerability has been patched in all supported versions of Self-hosted. The versions below have all been updated to protect from this vulnerability. You can download these versions at the Looker download page https://download.looker.com/ : * 24.18.201+ * 25.0.79+ * 25.6.66+ * 25.12.7+ * 25.16.0+ * 25.18.0+ * 25.20.0+
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Google Cloud · Lookerbefore 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0 and 1 more
- Google Cloud · Lookerbefore 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0 and 1 more
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Weakness
- Cross-site Scripting
- Vendor
- Google Cloud
- Published
- November 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-12739 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.