CVE-2026-57233

Notepad++: Path Traversal (Zip Slip) in WinGup Plugin Extraction

Published: Aug 17, 2026Updated: Sep 9, 2026 Sources: CVE List NVDCWE-22

8.1HIGH

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:RUser Interaction

Required

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-22

Affected Products

notepad-plus-plus

commercialaka notepad++, notepad plus plus, notepad+ plus

notepad-plus-plusOn-prem

Consumer Software / productivity

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Collection

Discovery

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References

https://github.com/notepad-plus-plus/notepad-plus-plus/security/advisories/GHSA-hjxw-84rf-wg5r

github.com

https://github.com/notepad-plus-plus/wingup/pull/106

github.com

https://github.com/notepad-plus-plus/wingup/commit/7670296a5c7fdec624e0a45dbde51059a7d735a8

github.com

and 1 more references View all →

News mentions

⚡ Weekly Recap: Rogue AI Models, $88M Bitcoin Theft, Water-System Attacks and Dangling DNS Hijacks
en·The Hacker News·Aug 3, 2026 Exploited Coldcard Wallet Laundry Bear

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