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TI-2025-11675 Aliases CVE-2025-12739GHSA-mcm3-jr69-vvr3

Cross-Site Scripting (XSS) in Looker's Extension Loader leading to Admin Account Compromise

Priority LOW 34CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Active
Attack complexity
Low
Attack requirements
Present
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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+

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00329 26th percentileScored 2026-11-07
Fix Fixed Looker (Google Cloud): 24.18.201, 25.0.79, 25.6.66 +4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoogleLookerbefore 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0; before 25.20.024.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0Patch availableCNA
GoogleLookerbefore 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0; before 25.20.024.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0Patch availableCNA
  • Looker VendorGoogle Affected before 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0; before 25.20.0 Fixed in 24.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0 Patch available CNA
  • Looker VendorGoogle Affected before 24.18.201; before 25.0.79; before 25.6.66; before 25.12.7; before 25.16.0; before 25.18.0; before 25.20.0 Fixed in 24.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0 Patch available CNA

Remediation

  • Fix · CNA Looker (Google Cloud) Fixed in 24.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0
  • Fix · CNA Looker (Google Cloud) Fixed in 24.18.201, 25.0.79, 25.6.66, 25.12.7, 25.16.0, 25.18.0, 25.20.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-12739
  2. 2026-10-03 Alias added: GHSA-mcm3-jr69-vvr3

References

Other 1

  • TI-2025-09686 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-07390 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04898 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04600 Type confusion in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2024-04346 Use after free in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
See all 17247 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences