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CVE-2026-57233— Notepad++: Path Traversal (Zip Slip) in WinGup Plugin Extraction

Quick assessment

Affected
notepad-plus-plus notepad-plus-plus
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

notepad++是notepad++个人开发者开源的一款轻量级的代码与文本编辑工具。 Notepad++ 8.9.7之前版本存在路径遍历漏洞，该漏洞源于WinGup解压函数将不受信任的ZIP条目名称连接到unzipDestTo时未进行规范包含验证，可能允许攻击者通过特制ZIP文件覆盖插件目录中的DLL，导致执行任意代码。

CVSS 8.1 · High EPSS 0.48% · P40

Affected Version Matrix 1

VendorProduct Version RangeStatus
notepad-plus-plus notepad-plus-plus < 8.9.7 affected
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I. Basic Information for CVE-2026-57233

Vulnerability Information
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Vulnerability Title
Notepad++: Path Traversal (Zip Slip) in WinGup Plugin Extraction
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Notepad++ 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
notepad++是notepad++个人开发者开源的一款轻量级的代码与文本编辑工具。 Notepad++ 8.9.7之前版本存在路径遍历漏洞，该漏洞源于WinGup解压函数将不受信任的ZIP条目名称连接到unzipDestTo时未进行规范包含验证，可能允许攻击者通过特制ZIP文件覆盖插件目录中的DLL，导致执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
notepad-plus-plus notepad-plus-plus < 8.9.7 -

II. Public POCs for CVE-2026-57233

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11862 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-57233

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Patches & Fixes for CVE-2026-57233 (2)

Vendor Advisories for CVE-2026-57233 (1)

Vendor Pages for CVE-2026-57233 (1)

Same Patch Batch · notepad-plus-plus · 2026-08-17 · 4 CVEs total

CVE-2026-54758 7.8 HIGH Notepad++: Stack Buffer Overflow in expandNppEnvironmentStrs
CVE-2026-71858 5.4 MEDIUM Notepad++: shortcuts.xml Macro HMAC Bypass Enables Conditional Elevated Command Execution
CVE-2026-52886 5.1 MEDIUM Notepad++: session.xml backupFilePath starts_with Bypass

IV. Related Vulnerabilities

Same product: notepad-plus-plus
Same vendor: notepad-plus-plus
Same weakness: CWE-22

V. Comments for CVE-2026-57233

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