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CVE-2026-50018 is a denial-of-service vulnerability in Hoverfly affecting remote post-serve actions. The flaw is caused by unbounded goroutine leaks when these actions use Go's default HTTP client without configured timeouts. If a remote post-serve action is configured to contact a non-responsive endpoint, requests can remain blocked indefinitely and accumulate over time, causing uncontrolled growth in concurrent goroutines and associated resource consumption within the Hoverfly process.
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