CVE-2026-6539
MEDIUM
NVD
CVSS Score
4.4
Severity
MEDIUM
Published
Apr 30, 2026
Vendor
unknown
Description
Notepad++ 8.9.3 contains a format string injection vulnerability in the Find Results panel handler that allows attackers to cause denial of service and information disclosure by crafting a malicious nativeLang.xml language pack file. Attackers can distribute a poisoned language pack through community channels that triggers format string interpretation when a user performs search operations, leading to access violations and potential leakage of stack or register contents.