{"id":"CVE-2026-57233","title":"Notepad++ is a free and open-source source code editor","summary":"Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the WinGup decompress function joins untrusted ZIP entry names to unzipDestTo without canonical containment validation, allowing an entry such as ../mimeTools/mimeTo…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","cwe":["CWE-22"],"published":"2026-08-17","updated":"2026-09-09","sourceUpdated":"2026-09-09T21:11:25.743","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57233","references":[{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7","label":"security-advisories@github.com"},{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-hjxw-84rf-wg5r","label":"security-advisories@github.com"},{"url":"https://github.com/notepad-plus-plus/wingup/commit/7670296a5c7fdec624e0a45dbde51059a7d735a8","label":"security-advisories@github.com"},{"url":"https://github.com/notepad-plus-plus/wingup/pull/106","label":"security-advisories@github.com"},{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-hjxw-84rf-wg5r","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00544,"epssPercentile":0.44369,"ingestedAt":"2026-09-09T21:22:45.535Z","slug":"CVE-2026-57233","body":"## Overview\n\nNotepad++ is a free and open-source source code editor. Prior to 8.9.7, the WinGup decompress function joins untrusted ZIP entry names to unzipDestTo without canonical containment validation, allowing an entry such as ../mimeTools/mimeTools.dll to overwrite a DLL in a sibling plugin directory and execute attacker-controlled code when Notepad++ next loads that plugin. This issue is fixed in version 8.9.7.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}