CVE-2025-12739
HighCVSS 7.3Exploitation Probability (EPSS)
Low risk22th percentile - higher than 22% of all known CVEs
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.
Risk Assessment
A malicious script could execute in the context of an administrator, potentially leading to session hijacking and unauthorized actions within the Looker instance. Both Looker-hosted and self-hosted instances were affected.
Recommendation
For self-hosted instances, upgrade as soon as possible to versions 24.18.201+, 25.0.79+, 25.6.66+, 25.12.7+, 25.16.0+, 25.18.0+ or 25.20.0+. Looker-hosted instances have already been mitigated and require no user action.
Other vulnerabilities in Looker
See all- CVE-2025-12414Critical
In Looker configured with OIDC authentication, an attacker could take over a user account due to email address string normalization. Looker-hosted and Self-hosted were vulnerable; hosted is mitigated, self-hosted needs upgrade.
- CVE-2025-12741High
A Looker user with Developer role could create a database connection using Denodo driver and manipulate LookML to execute a malicious command. Looker-hosted and Self-hosted are vulnerable; hosted is mitigated, self-hosted needs upgrade.
- CVE-2025-12740High
A Looker user with Developer role could create a database connection using IBM DB2 driver and manipulate LookML to execute a malicious command due to inadequate filtering. Looker-hosted and Self-hosted are vulnerable; hosted is mitigated, self-hosted needs upgrade.
- CVE-2025-12155High
A Command Injection vulnerability, resulting from improper file path sanitization (Directory Traversal) in Looker allows an attacker with Developer permission to execute arbitrary shell commands when a user is deleted on the host system. 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/ : 24.12.100+, 24.18.192+, 25.0.69+, 25.6.57+, 25.8.39+, 25.10.22+
Original NVD description (English source)
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+
Vulnerability data from NVD (NIST) · CISA KEV · EPSS