CVE-2026-126042

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.

• https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L50-L56
• https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L8-L24
• https://github.com/vnotex/vnote/commit/0f5edd837d233a929d2a514a0e718d5d19c93918
• https://github.com/vnotex/vnote/releases/tag/v4.12.0

• https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L50-L56
• https://github.com/vnotex/vnote/blob/551dfd86b73ce6d93e5403296b069219cb668dc2/src/core/services/shellexecution.cpp#L8-L24
• https://github.com/vnotex/vnote/commit/0f5edd837d233a929d2a514a0e718d5d19c93918
• https://github.com/vnotex/vnote/releases/tag/v4.12.0
• https://r3vpwnx.space/research/vnote-tasks-cmdinjection/
• https://www.vulncheck.com/advisories/vnote-3.11.0-before-4.12.0-os-command-injection-via-tasks-magic-variables

• HIGHCVE-2013-20007PoC
• HIGHCVE-2020-37279PoC
• CRITICALCVE-2020-37282PoC
• HIGHCVE-2022-51019PoC
• CRITICALCVE-2024-4457PoC
• HIGHCVE-2025-14754
• CRITICALCVE-2025-31704
• CRITICALCVE-2025-71429PoC

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