Information disclosure in Notepad++ - #VU144998
Published: August 24, 2026
Vulnerability identifier: #VU144998
CSH Severity: Medium
CVSS v4: 6.8 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-200
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to exposure of sensitive information to an unauthorized actor in the clickable link handling feature when processing a user-clicked file:// link in an opened document. A remote attacker can provide a specially crafted text file containing a file:// link to disclose sensitive information.
User interaction is required to click the crafted link, and the issue occurs in the default configuration on Windows.
Affected software
Notepad++
Remediation
Install security update from vendor's website.
Notepad++ - update to 8.9.8