CVE-2026-6539 — Notepad++ 8.9.3 Format String Injection via nativeLang.xml
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…
Published: 2026-04-30 · CVSS: 4.6 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7