CVE-2026-6539
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.
- Affected products
- Notepad++
- Notepad-plus-plus Notepad\+\+
- = 8.9.3
- Fix
- Available
- CVSS 4.0
- 4.6 MEDIUM
- CVSS 3.1
- 4.4 MEDIUM
- EPSS
- 0.2% (9th percentile)
- Weakness
- CWE-134
- NVD status
- Analyzed
- Published
- 2026-04-30
CVE-2026-6539 at NVD
No indexed exploits for CVE-2026-6539 yet
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