Notepad++ 8.9.6.1 < 8.9.6.2 Multiple Vulnerabilities

high Nessus Plugin ID 318685

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Synopsis

A text editor on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Notepad++ installed on the remote host is 8.9.6.1 prior to 8.9.6.2. It is, therefore, affected by multiple vulnerabilities:

- An arbitrary code execution vulnerability exists due to improper handling of shortcuts.xml files. A previous fix in version 8.9.6.1 was incomplete, and a bypass scenario allows an attacker to still exploit this issue to execute arbitrary code. (CVE-2026-48800)

- A path traversal vulnerability exists in the isInTrustedDirectory() function. The function does not canonicalize the path before checking, allowing an attacker to bypass the trusted directory check using path traversal sequences after a trusted directory prefix.
(CVE-2026-52884)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Notepad++ version 8.9.6.2 or later.

Plugin Details

Severity: High

ID: 318685

File Name: notepad_plus_plus_8_9_6_2.nasl

Version: 1.5

Type: Local

Agent: windows

Family: Windows

Published: 6/4/2026

Updated: 7/15/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.03

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-48800

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:notepad-plus-plus:notepad%5c%2b%5c%2b

Required KB Items: installed_sw/Notepad++, SMB/Registry/Enumerated

Exploit Ease: No known exploits are available

Patch Publication Date: 5/31/2026

Vulnerability Publication Date: 5/26/2026

Reference Information

CVE: CVE-2026-48800, CVE-2026-52884

IAVA: 2026-A-0524, 2026-A-0635

Detections

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