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CVE-2026-86022— VNote: Argument injection to arbitrary command execution via crafted note filename in external-program handling

Quick assessment

Affected
vnotex vnote
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

VNote 是一款笔记平台。在 4.3.0 版本之前， 函数将笔记路径用双引号括起，并替换到一个命令字符串中，该字符串随后通过 由 重新解析为参数。其中， 中的自动路径以及 中的“打开方式”路径均会触及此漏洞点。在 Linux 和 macOS 系统上，攻击者可以在 POSIX 兼容的笔记文件名中嵌入受控的双引号，从而截断被引号包围的路径，并向受害者配置的外部程序中注入额外参数。若配置的外部程序支持可执行命令的参数（例如 vim 或 gvim 的 选项），则注入的参数可在用户权限下执行任意命令。此问题已在 4.3.0

CVSS 7.0 · High EPSS 0.14% · P3

Affected Version Matrix 1

VendorProduct Version RangeStatus
vnotex vnote < 4.3.0 affected
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I. Basic Information for CVE-2026-86022

Vulnerability Information
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Vulnerability Title
VNote: Argument injection to arbitrary command execution via crafted note filename in external-program handling
Source: CVE Program / CVE List V5
Vulnerability Description
VNote is a note-taking platform. Prior to 4.3.0, SessionConfig::ExternalProgram::fetchCommand wraps a note path in double quotes and substitutes it into a command string that QProcess::start(const QString&) reparses into arguments through ProcessUtils::startDetached. The automatic path in src/controllers/viewareacontroller.cpp and the Open With path in src/controllers/notebooknodecontroller.cpp both reach this sink. On Linux and macOS, an attacker-controlled double quote in a POSIX note filename can terminate the quoted path and add arguments to the victim's configured external program. If the configured program supports an argument that executes commands, such as the vim or gvim -c option, the injected arguments can execute arbitrary commands as the user. This issue is fixed in version 4.3.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
vnotex vnote < 4.3.0 -

II. Public POCs for CVE-2026-86022

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III. Intelligence Information for CVE-2026-86022

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Patches & Fixes for CVE-2026-86022 (1)

Vendor Advisories for CVE-2026-86022 (1)

Vendor Pages for CVE-2026-86022 (1)

IV. Related Vulnerabilities

Same product: vnote
Same vendor: vnotex
Same weakness: CWE-78

V. Comments for CVE-2026-86022

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