{"id":"CVE-2026-50018","revision":"2d805af2a17e4f1c8faf8dba55317731","records":[{"revision":"2d805af2a17e4f1c8faf8dba55317731","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-50018","aliases":[],"title":"Hoverfly: Denial of Service via Goroutine Leak in Remote Post-Serve Actions","description":"Hoverfly is an open source API simulation tool. Prior to version 1.12.8, remote post-serve actions use `http.DefaultClient` without any timeout configuration. When the remote endpoint is unreachable or intentionally slow (accepts TCP connection but never responds), each triggered proxy request spawns a goroutine that blocks indefinitely on `http.DefaultClient.Do()`. An attacker can cause unbounded goroutine accumulation leading to memory exhaustion and process crash (OOM kill). Unlike local post-serve action execution, this requires no binary execution, only a URL pointing to a non-responsive endpoint. Version 1.12.8 patches the issue.","state":0,"publishedAt":"2026-09-11T21:28:29.228+00:00","modifiedAt":"2026-09-14T19:28:30.918+00:00","affected":[{"ecosystem":"Vendor product","name":"hoverfly","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"SpectoLabs\",\n                    \"product\": \"hoverfly\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.12.8\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/SpectoLabs/hoverfly/security/advisories/GHSA-42j2-w334-qxw7","https://github.com/SpectoLabs/hoverfly/pull/1228","https://github.com/SpectoLabs/hoverfly/releases/tag/v1.12.8"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50018","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-50018","identifiers":["CVE-2026-50018"]},"retained":false,"historicalAffected":[]}],"coverage":[]}