CVE-2026-57233
Notepad++ is a free and open-source source code editor. Prior to 8.9.7, the WinGup decompress function joins untrusted ZIP entry names to unzipDestTo without canonical containment validation, allowing an entry such as ../mimeTools/mimeTools.dll to overwrite a DLL in a sibling plugin directory and execute attacker-controlled code when Notepad++ next loads that plugin. This issue is fixed in version 8.9.7.
- Affected products
- Notepad++
- Fix
- Available
- CVSS 3.1
- 8.1 HIGH
- EPSS
- 0.5% (39th percentile)
- Weakness
- CWE-22
- NVD status
- Received
- Published
- 2026-08-17
CVE-2026-57233 at NVD
No indexed exploits for CVE-2026-57233 yet
Our index is partial: it proves presence, never absence
No exploit for CVE-2026-57233 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.