Vulnerability details
CVE-2026-57233
notepad-plus-plus notepad-plus-plus
Notepad++: Path Traversal (Zip Slip) in WinGup Plugin Extraction
CVSS 3.1
8.1High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| notepad-plus-plus | notepad-plus-plus | < 8.9.7 | CVEProject cvelistV5 (CNA) |
References and advisories
4- https://github.com/notepad-plus-plus/wingup/pull/106 x_refsource_MISC
- https://github.com/notepad-plus-plus/wingup/commit/7670296a5c7fdec624e0a45dbde51059a7d735a8 x_refsource_MISC
- https://github.com/notepad-plus-plus/notepad-plus-plus/releases/tag/v8.9.7 x_refsource_MISC
- https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-hjxw-84rf-wg5r x_refsource_CONFIRM
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Details
- Published
- 2026-08-17
- Last updated
- 2026-08-18
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.5%
Probability of exploitation in 30 days
43.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')