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.

INFO

Published Date :

2026-04-30T20:31:54.961Z

Last Modified :

2026-05-01T14:21:46.872Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-6539 vulnerability.

Vendors Products
Notepad++
  • Notepad++
Notepad-plus-plus
  • Notepad\+\+
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-6539.

URL Resource
https://notepad-plus-plus.org/news/v894-released/ cve-icon cve-icon
https://www.vulncheck.com/advisories/notepad-format-string-injection-via-nativelang-xml cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact