{"id":"CVE-2026-42214","state":"PUBLISHED","title":"Improper Control of Generation of Code ('Code Injection') in dail8859/NotepadNext","description":"Notepad Next is a cross-platform, reimplementation of Notepad++. Prior to version 0.14, NotepadNext's detectLanguageFromExtension() function interpolates a file's extension directly into a Lua script without sanitization. An attacker can craft a filename whose extension contains Lua code, which executes automatically when the victim opens the file in NotepadNext. Because luaL_openlibs() is called unconditionally, the full os, io, and package libraries are available to the injected code, enabling arbitrary command execution. This issue has been patched in version 0.14.","publishedAt":"2026-05-07T18:14:20.246Z","updatedAt":"2026-05-09T03:55:59.742Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["dail8859 NotepadNext"],"affected":[{"vendor":"dail8859","product":"NotepadNext","versions":[{"version":"< 0.14","status":"affected"}]}],"references":["https://github.com/dail8859/NotepadNext/security/advisories/GHSA-m5fq-c9x5-w54g","https://github.com/dail8859/NotepadNext/commit/f3ca1b10aca52f05fd7f4f5ebf9b566d6cd95ccc","https://github.com/dail8859/NotepadNext/releases/tag/v0.14"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/42xxx/CVE-2026-42214.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42214","state":"PUBLISHED","datePublished":"2026-05-07T18:14:20.246Z","dateUpdated":"2026-05-09T03:55:59.742Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-04-25T05:04:37.028Z"},"containers":{"cna":{"title":"Improper Control of Generation of Code ('Code Injection') in dail8859/NotepadNext","descriptions":[{"lang":"en","value":"Notepad Next is a cross-platform, reimplementation of Notepad++. Prior to version 0.14, NotepadNext's detectLanguageFromExtension() function interpolates a file's extension directly into a Lua script without sanitization. An attacker can craft a filename whose extension contains Lua code, which executes automatically when the victim opens the file in NotepadNext. Because luaL_openlibs() is called unconditionally, the full os, io, and package libraries are available to the injected code, enabling arbitrary command execution. This issue has been patched in version 0.14."}],"affected":[{"vendor":"dail8859","product":"NotepadNext","versions":[{"version":"< 0.14","status":"affected"}]}],"references":[{"url":"https://github.com/dail8859/NotepadNext/security/advisories/GHSA-m5fq-c9x5-w54g","name":"https://github.com/dail8859/NotepadNext/security/advisories/GHSA-m5fq-c9x5-w54g","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/dail8859/NotepadNext/commit/f3ca1b10aca52f05fd7f4f5ebf9b566d6cd95ccc","name":"https://github.com/dail8859/NotepadNext/commit/f3ca1b10aca52f05fd7f4f5ebf9b566d6cd95ccc","tags":["x_refsource_MISC"]},{"url":"https://github.com/dail8859/NotepadNext/releases/tag/v0.14","name":"https://github.com/dail8859/NotepadNext/releases/tag/v0.14","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-07T18:14:20.246Z"},"source":{"advisory":"GHSA-m5fq-c9x5-w54g","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/dail8859/NotepadNext/security/advisories/GHSA-m5fq-c9x5-w54g","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-08T00:00:00+00:00","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-42214"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-09T03:55:59.742Z"}}]}}}