{"id":"CVE-2026-52886","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, Notepad++ validates the backupFilePath attribute from session.xml with std::wstring::starts_with against the expected backup directory without path normalization, al…","severity":"none","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-2026-52886","references":[{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/commit/7e66f36db666a13b09fb5c31232ab2ca1c2ebccc","label":"security-advisories@github.com"},{"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-rqfm-pw34-r7j6","label":"security-advisories@github.com"},{"url":"https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-rqfm-pw34-r7j6","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","exploit-available"],"epss":0.00238,"epssPercentile":0.1508,"exploits":{"github":1,"githubRepos":["https://github.com/v3s9er/CVE-2026-52886"],"checkedAt":"2026-09-21T15:29:24.909Z"},"exploitAvailable":true,"ingestedAt":"2026-09-09T21:22:45.535Z","slug":"CVE-2026-52886","body":"## Overview\n\nNotepad++ is a free and open-source source code editor. Prior to 8.9.7, Notepad++ validates the backupFilePath attribute from session.xml with std::wstring::starts_with against the expected backup directory without path normalization, allowing parent-directory sequences during snapshot-mode restoration to read an arbitrary user-readable file outside the backup directory into an editor tab. 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":15,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[]}