Use of Externally-Controlled Format String Affecting notepad-plus-plus/notepad-plus-plus package, versions [,8.9.4)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-NOTEPADPLUSPLUSNOTEPADPLUSPLUS-16353424
- published3 May 2026
- disclosed30 Apr 2026
- creditHazley Samsudin
Introduced: 30 Apr 2026
NewCVE-2026-6539 (opens in a new tab)How to fix?
Upgrade notepad-plus-plus/notepad-plus-plus to version 8.9.4 or higher.
Overview
Affected versions of this package are vulnerable to Use of Externally-Controlled Format String via the Find Results panel handler when processing a crafted nativeLang.xml language pack file. An attacker can cause denial of service and potentially disclose sensitive information by distributing a malicious language pack that triggers format string interpretation during search operations.