{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-14765","assignerOrgId":"26969f82-7e87-44d8-9cb5-f6fb926ddd43","state":"PUBLISHED","assignerShortName":"AHA","dateReserved":"2026-07-04T17:45:14.357Z","datePublished":"2026-10-14T02:31:08.607Z","dateUpdated":"2026-10-18T13:54:09.144Z"},"containers":{"cna":{"providerMetadata":{"orgId":"26969f82-7e87-44d8-9cb5-f6fb926ddd43","shortName":"AHA","dateUpdated":"2026-10-14T02:31:08.607Z"},"title":"Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL","datePublic":"2026-10-14T02:00:00.000Z","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-1188","description":"CWE-1188 Initialization of a Resource with an Insecure Default","type":"CWE"}]}],"affected":[{"vendor":"Epic Games","product":"Unreal Engine","versions":[{"status":"affected","version":"0","lessThanOrEqual":"5.8.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::LaunchURL). The URL scheme filter (FURLRequestFilter) is empty by default, which permits all URL schemes. On Windows, this results in a call to ShellExecuteW() with the open verb, so a supplied file:/// URI causes the referenced file to be executed. Any Unreal Engine game that loads user-generated content containing Blueprints is vulnerable to command execution via a malicious local file or a remote file on a WebDAV share. This is an instance of CWE-1188 (Initialization of a Resource with an Insecure Default).","supportingMedia":[{"type":"text/html","base64":false,"value":"Epic Games Unreal Engine versions up to and including 5.8.0 ship with an insecure default configuration for the LaunchURL Blueprint node (UKismetSystemLibrary::LaunchURL). The URL scheme filter (FURLRequestFilter) is empty by default, which permits all URL schemes. On Windows, this results in a call to ShellExecuteW() with the open verb, so a supplied file:/// URI causes the referenced file to be executed. Any Unreal Engine game that loads user-generated content containing Blueprints is vulnerable to command execution via a malicious local file or a remote file on a WebDAV share. This is an instance of CWE-1188 (Initialization of a Resource with an Insecure Default)."}]}],"references":[{"url":"https://khaelkugler.com/blogs/meccha_chameleon.html","tags":["related"]},{"url":"https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001011111111101111111111110000000000000000000000000000000000000000000000000000001011","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.7,"vectorString":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"}},{"other":{"type":"ssvc","content":{"options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CNA","version":"2.0.3"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"credits":[{"lang":"en","value":"Khael Kugler","type":"finder"},{"lang":"en","value":"todb of AHA!","type":"coordinator"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 1.0.2"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-14765","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-10-18T13:29:54.607074Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-18T13:54:09.144Z"}}]}}