CVE-2026-126316: Frappe HRMS 16.0.0 before 16.20.1 Subscription Key Exposure via Request URL
Frappe HRMS from 16.0.0 before 16.20.1 contains an information exposure vulnerability that places the subscription key in the query string of outbound subscription status requests. Attackers with access to proxy, server, or monitoring logs along the request path can recover the site's subscription key from recorded URLs.
Affected Software
Event History
Frequently Asked Questions
Who can recover the exposed subscription key?
An attacker needs access to proxy, server, or monitoring logs that record the outbound subscription-status request URL. The issue does not by itself expose the key to an unauthenticated remote user without access to those logs.
Which deployments are affected?
Frappe HRMS versions from 16.0.0 before 16.20.1 are affected. Deployments running 16.20.1 or later are not identified as affected by the provided advisory information.
How can administrators determine whether a key may already have been exposed?
Review proxy, server, and monitoring logs for recorded outbound subscription-status request URLs from affected HRMS versions. If those URLs retain query strings, the subscription key may have been logged.
What can be done if upgrading is not immediately possible?
Restrict access to logs along the outbound request path and prevent or redact query-string logging for subscription-status requests where possible. Existing logs containing recorded request URLs should be treated as potentially containing the subscription key.