CVE-2026-86022Public exploitHinoki check available

Command execution via note-filename argument injection

Published Oct 13, 2026 · Updated Oct 13, 2026

Argument injection in VNote before 4.3.0 allows attackers to execute commands via crafted note filenames passed to external programs. SessionConfig::ExternalProgram::fetchCommand double-quotes the path without escaping embedded quotes, and ProcessUtils::startDetached passes the resulting string to QProcess for argument reparsing. On Linux and macOS, opening an untrusted note through a configured program with command-executing options, such as vim, executes commands as the user.

CVSS severity7.0
High
EPSS probability0.14%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Argument injection in VNote before 4.3.0 allows attackers to execute commands via crafted note filenames passed to external programs. SessionConfig::ExternalProgram::fetchCommand double-quotes the path without escaping embedded quotes, and ProcessUtils::startDetached passes the resulting string to QProcess for argument reparsing. On Linux and macOS, opening an untrusted note through a configured program with command-executing options, such as vim, executes commands as the user.

The record

CVE
CVE-2026-86022
Published
Oct 13, 2026
Updated
Oct 13, 2026
Vendor
VNoteX Team
Product
VNote
Classifications
CWE-88, CWE-78, T1203
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Oct 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.3.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

VNoteX Team · VNoteversion=< 4.3.0

Published CVSS scores

7.0GitHub_MCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-88Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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