VNote 3.11.0 before 4.12.0 OS Command Injection via Tasks Magic Variables

Advisories

VNote 3.11.0 before 4.12.0 OS Command Injection via Tasks Magic Variables

Severity: high
Date: 11/10/2026
Affecting: VNote >= 3.11.0, < 4.12.0
CVE: CVE-2026-126042
CWE: CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CVSS: 7.3
CVSS V4 Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: https://github.com/vnotex/vnote/commit/0f5edd837d233a929d2a514a0e718d5d19c93918
VNote v4.12.0 Release Notes
https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L8-L24
https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L50-L56
https://r3vpwnx.space/research/vnote-tasks-cmdinjection/
Credit: Dilanka Kaushal Hewage (r3vpwnx)
Description: VNote 3.11.0 before 4.12.0 contains an OS command injection vulnerability in its Tasks feature: magic variables such as ${bufferName} and ${selectedText} are substituted into a shell command string without escaping. Attackers can share a notebook containing a note whose filename or text includes shell metacharacters such as $(...), backticks, ; or |, executing commands as the victim when they run a task referencing these variables.

Ready to get Started?

Explore VulnCheck, a next-generation Cyber Threat Intelligence platform, which provides exploit and vulnerability intelligence to help you prioritize and remediate vulnerabilities that matter.

Vulnerability Prioritization
Prioritize vulnerabilities that matter based on the threat landscape and defer vulnerabilities that don't.
Early Warning System
Real-time alerting of changes in the vulnerability landscape so that you can take action before the attacks start.

Schedule a Demo