{"id":"CVE-2026-86158","revision":"2ce2db6be19540c7950c2c15043e706a","records":[{"revision":"2ce2db6be19540c7950c2c15043e706a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-86158","aliases":[],"title":"Missing Authentication in the local .NET backend of Progress Telerik Fiddler Everywhere","description":"Missing authentication in the local .NET backend (Fiddler.WebUi) of Progress Software Fiddler Everywhere 8.0.2 allows a local unauthenticated attacker to mint OAuth tokens and read the machine-in-the-middle root certificate through an unauthenticated localhost HTTP and SignalR RPC channel.","state":0,"publishedAt":"2026-09-29T06:34:24.264+00:00","modifiedAt":"2026-09-30T15:28:20.211+00:00","affected":[{"ecosystem":"Vendor product","name":"Progress® Telerik® Fiddler® Everywhere","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Progress Software\",\n                    \"product\": \"Progress® Telerik® Fiddler® Everywhere\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.0.0\",\n                            \"lessThan\": \"8.2.0\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":7.7,"severity":"HIGH"}],"references":["https://www.telerik.com/fiddler/fiddler-everywhere/documentation/knowledge-base/kb-security-missing-authentication-for-critical-function-cve-2026-86158"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-86158","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-86158","identifiers":["CVE-2026-86158"]},"retained":false,"historicalAffected":[]}],"coverage":[]}