{"id":"CVE-2026-14765","state":"PUBLISHED","title":"Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL","description":"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).","publishedAt":"2026-10-14T02:31:08.607Z","updatedAt":"2026-10-18T13:54:09.144Z","severity":{"score":7.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H","source":"AHA"},"assigner":"AHA","products":["Epic Games Unreal Engine"],"affected":[{"vendor":"Epic Games","product":"Unreal Engine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.8.0","versionType":"semver"}]}],"references":["https://khaelkugler.com/blogs/meccha_chameleon.html","https://takeonme.org/gcves/GCVE-1337-2026-00000000000000000000000000000000000000000000000001011111111101111111111110000000000000000000000000000000000000000000000000000001011"],"weaknesses":["CWE-1188"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/14xxx/CVE-2026-14765.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-14765","state":"PUBLISHED","datePublished":"2026-10-14T02:31:08.607Z","dateUpdated":"2026-10-18T13:54:09.144Z","assignerShortName":"AHA","assignerOrgId":"26969f82-7e87-44d8-9cb5-f6fb926ddd43","dateReserved":"2026-07-04T17:45:14.357Z"},"containers":{"cna":{"title":"Epic Games Unreal Engine Insecure Default URL Scheme Allowance in LaunchURL","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)."}],"affected":[{"vendor":"Epic Games","product":"Unreal Engine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"5.8.0","versionType":"semver"}]}],"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"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-1188","lang":"en","description":"CWE-1188 Initialization of a Resource with an Insecure Default","type":"CWE"}]}],"providerMetadata":{"shortName":"AHA","orgId":"26969f82-7e87-44d8-9cb5-f6fb926ddd43","dateUpdated":"2026-10-14T02:31:08.607Z"},"datePublic":"2026-10-14T02:00:00.000Z","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":[{"title":"CISA ADP Vulnrichment","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"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-18T13:54:09.144Z"}}]}}}