{"id":"CVE-2026-77605","summary":"Notepad++ “Run by system” executes *.txt.cmd when user selected *.txt (target confusion → command execution)","details":"Notepad++ is a free and open-source source code editor. Prior to 8.9.8, the Folder as Workspace Run by system action in Notepad++ can resolve a different sibling file than the file selected by the user. When an attacker places a command script whose name is the selected text-file path with .cmd appended, and the user invokes Run by system on the text file on Windows 10 or Windows 11, Notepad++ can execute the sibling script as the current user instead of opening the selected file. This issue is fixed in version 8.9.8.","aliases":["GHSA-w5xq-frjg-w4cw"],"modified":"2026-09-24T08:34:24.487247Z","published":"2026-09-22T17:13:21.434Z","database_specific":{"cwe_ids":["CWE-20","CWE-706"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77605.json","cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.8"},{"type":"WEB","url":"https://notepad-plus-plus.org/news/v898-released"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77605.json"},{"type":"ADVISORY","url":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-w5xq-frjg-w4cw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77605"},{"type":"FIX","url":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/notepad-plus-plus/notepad-plus-plus","events":[{"introduced":"0"},{"fixed":"00fa5df0da1d4f6b334317aa979db13ac77ee24d"},{"fixed":"40f896e6f6c49a29b6ca3f559696dd786f40152d"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"8.9.8"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v8.9.7","v8.9.6.4","v8.9.6.2","v8.9.6.1","v8.9.6","v8.9.5","v8.9.4","v8.9.3","v8.9.2","v8.9.1","v8.9","v8.8.9","v8.8.8","v8.8.7","v8.8.6","v8.8.5","v8.8.4","v8.8.3","v8.8.2","v8.8.1","v8.8","v8.7.9","v8.7.8","v8.7.7","v8.7.6","v8.7.5","v8.7.4","v8.7.3","v8.7.2","v8.7.1","v8.7","v8.6.9","v8.6.8","v8.6.7","v8.6.6","v8.6.5","v8.6.4","v8.6.3","v8.6.2","v8.6.1","v8.6","v8.5.8","v8.5.7","v8.5.6","v8.5.5","v8.5.4","v8.5.3","v8.5.2","v8.5.1","v8.5","v8.4.9","v8.4.8","v8.4.7","v8.4.6","v8.4.5","v8.4.4","v8.4.3","v8.4.2","v8.4.1","v8.4","v8.3.3","v8.3.2","v8.3.1","v8.3","v8.2.1","v8.2","v8.1.9.3","v8.1.9.2","v8.1.9.1","v8.1.9","v8.1.8","v8.1.7","v8.1.6","v8.1.5","v8.1.4","v8.1.3","v8.1.2","v8.1.1","v8.1","v8","v7.9.5","v7.9.4","v7.9.3","v7.9.2","v7.9.1","v7.9","v7.8.9","v7.8.8","v7.8.7","v7.8.6","v7.8.5","v7.8.4","v7.8.3","v7.8.2","v7.8.1","v7.8","v7.7.1","v7.7","v7.6.6","v7.6.5","v7.6.4","v7.6.3","v7.6.2","v7.6.1","v7.6","v7.5.9","v7.5.8","v7.5.7","v7.5.6","v7.5.5","v7.5.4","v7.5.3","v7.5.2","v7.5.1","v7.4.2","v7.4.1","v7.4","v7.3.3","v7.3.2","v7.3.1","7.3.1","v7.3","v7.2.2","7.2.2","v7.2.1","v7.2","v7.1","v7","v6.9.2","v6.9.1","v6.9","v6.8.9","v6.8.8","v6.8.7","v6.8.6","v6.8.5","v6.8.4","v6.8.3","v6.8.2","v6.8.1","v6.8","v6.7.9.2","v6.7.9.1","v6.7.9","v6.7.8.2","v6.7.8.1","v6.7.8","v6.7.7","v6.7.5","v6.7.4_-_Je_suis_Charlie_edition","v6.7.3","v6.7.2","v6.7.1","v6.7","v6.6.9","v6.6.8","v6.6.7","v6.6.6_-_Friday_the_13th_edition","v6.6.4","v6.6.3","v6.6.2","v6.6.1","v6.6","v6.5.5","v6.5.4","v6.5.3","v6.5.2","v6.5.1","v6.5","v6.4.5","v6.4.4","v6.4.3","v6.4.2","v6.4.1","v6.4","v6.3.3","v6.3.2","v6.3.1","v6.3","v6.2.3_-_End_of_World_Edition","v6.2.2","v6.2.1","v6.2","v6.1.8","v6.1.7","v6.1.6","v6.1.5","v6.1.4","v6.1.3","v6.1.2","v6.1.1","v6.1","v6","v5.9.8","v5.9.7","v5.9.6.2","v5.9.6.1","v5.9.6","v5.9.5","v5.9.4","v5.9.3","v5.9.2","v5.9.1","v5.9","v5.8.7","v5.8.6","v5.8.5","v5.8.4","v5.8.3","v5.8.2","v5.8.1","v5.8","v5.7","v5.6.8","v5.6.7","v5.6.6","v5.6.5","v5.6.4","v5.6.3","v5.6.2","v5.6.1","v5.6","v5.5.1","v5.5","v5.4.5","v5.4.4","v5.4.3","v5.4.2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-77605.json","vanir_signatures_modified":"2026-09-24T08:34:24Z","vanir_signatures":[{"id":"CVE-2026-77605-9ea9e89d","signature_type":"Line","signature_version":"v1","source":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d","target":{"file":"PowerEditor/src/WinControls/FileBrowser/fileBrowser.cpp"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["245613193499863434060163472750531141533","327967324165986924403148504852189138143","149070015559300172073527921516817017941","248905209038951969869351355454601946172","191931770191277996879454454995706643990","24782718833065859863019603848470188273"]}},{"deprecated":false,"digest":{"function_hash":"69610240248603296404170282916983552475","length":3765},"id":"CVE-2026-77605-cac46682","signature_type":"Function","signature_version":"v1","source":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/00fa5df0da1d4f6b334317aa979db13ac77ee24d","target":{"file":"PowerEditor/src/WinControls/FileBrowser/fileBrowser.cpp","function":"FileBrowser::popupMenuCmd"}}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}