CVE-2026-52886NVD

Vulnerability 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, 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.

Severity Level

MEDIUM

Published Date

Aug 17, 2026

Last Modified

Aug 18, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

0.24%Probability

Root Weakness (CWE)

N/A

Affected & Patched Versions

Affected Versions

< v8.9.6.4

Patched Versions

v8.9.7

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