CVEvulnerability

CVE-2026-52884

7.8 HIGH Published 2026-06-26 Modified 2026-06-29 Official page ↗
Status
Analyzed
Published
2026-06-26
Last modified
2026-06-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-42

Description

Notepad++ is a free and open-source source code editor. In v8.9.6.1, isInTrustedDirectory() does NOT canonicalize the path before checking. It uses a prefix-based check (PathIsPrefix() or equivalent) that matches paths starting with trusted directory strings. A path traversal using ..\..\ after a trusted directory prefix passes the check while resolving to an untrusted location. The CVE-2026-48800 patch adds isInTrustedDirectory() validation in Command::run() (RunDlg.cpp) before calling ShellExecute(). This function checks whether the resolved executable path is under a trusted directory. This vulnerability is fixed in 8.9.6.2.

Affected configurations

• notepad-plus-plus notepad\+\+ 8.9.6.1

Related

Weakness · CWE (1)

  • CWE-42 Path Equivalence: 'filename.' (Trailing Dot) weakness

References