CVE-2025-13465

A flaw was found in Lodash. A prototype pollution vulnerability in the _.unset and _.omit functions allows an attacker able to control property paths to delete methods from global prototypes. By removing essential functionalities, this can result in a denial of service.

This issue is only exploitable by applications using the _.unset and _.omit functions on an object and allowing user input to determine the path of the property to be removed. This issue only allows the deletion of properties but does not allow overwriting their behavior, limiting the impact to a denial of service. Due to this reason, this vulnerability has been rated with an important severity.

In Grafana, JavaScript code runs only in the browser, while the server side is all Golang. Therefore, the worst-case scenario is a loss of functionality in the client application inside the browser. To reflect this, the CVSS availability metric and the severity of the Grafana and the Grafana-PCP component have been updated to low and moderate, respectively.

The lodash dependency is bundled and used by the pcs-web-ui component of the PCS package. In Red Hat Enterprise Linux 8.10, the pcs-web-ui component is no longer included in the PCS package. As a result, RHEL 8.10 does not ship the vulnerable lodash component within PCS and is therefore not-affected by this CVE.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

To mitigate this issue, implement strict input validation before passing any property paths to the _.unset and _.omit functions to block attempts to access the prototype chain. Ensure that strings like proto, constructor and prototype are blocked, for example.