OS Command Injection in Notepad++ - CVE-2026-48778
Published: May 26, 2026
Vulnerability identifier: #VU132324
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-48778
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Notepad++
Affected software:
Notepad++
Notepad++
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to command injection in the config.xml commandLineInterpreter handling when opening the containing folder in cmd. A remote attacker can supply a crafted config.xml value to execute arbitrary code.
User interaction is required to trigger the File → Open Containing Folder → cmd action.
How to mitigate CVE-2026-48778
Install security update from vendor's website.