Janet

by JanetLangv1.41.2

Last updated Aug 31, 2026

Janet is a functional and imperative programming language

Install with winget

$ winget install --id JanetLang.Janet --exact --version 1.41.2

Run in Command Prompt, PowerShell, or Windows Terminal. Prompts for any agreements.

Silent install command for Janet

Janet uses MSI (WiX). The silent install switches are /quiet /norestart.

One-line silent install (x64, machine scope)

msiexec.exe /i janet-1.41.2-windows-x64-installer.msi /quiet /norestart

See the full silent install reference for Janet →

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Installers · v1.41.2

Architecture	Type	Scope	Install	Download
x64	MSI WiX	machine		Direct

Copy a command tailored to that specific architecture, type, and scope - useful when winget would otherwise pick a different default.

Security

5 known CVEs via NVD

low3.3Patched in wingetCVE-2026-2869affects <=1.40.1Feb 21, 2026
A vulnerability was identified in janet-lang janet up to 1.40.1. Affected by this vulnerability is the function janetc_varset of the file src/core/specials.c of the component handleattr Handler. The manipulation leads to out-of-bounds read. The attack can only be performed from...
Patch
low3.3Patched in wingetCVE-2026-2242affects <=1.40.1Feb 9, 2026
A vulnerability was determined in janet-lang janet up to 1.40.1. This impacts the function janetc_if of the file src/core/specials.c. Executing a manipulation can lead to out-of-bounds read. The attack needs to be launched locally. The exploit has been publicly disclosed and may...
Patch
low3.3Patched in wingetCVE-2026-2241affects <=1.40.1Feb 9, 2026
A vulnerability was found in janet-lang janet up to 1.40.1. This affects the function os_strftime of the file src/core/os.c. Performing a manipulation results in out-of-bounds read. The attack must be initiated from a local position. The exploit has been made public and could be...
Patch
low3.3Patched in wingetCVE-2026-2240affects <=1.40.1Feb 9, 2026
A vulnerability has been found in janet-lang janet up to 1.40.1. The impacted element is the function janetc_pop_funcdef of the file src/core/compile.c. Such manipulation leads to out-of-bounds read. The attack must be carried out locally. The exploit has been disclosed to the p...
Patch
high7.5Patched in wingetCVE-2022-30763affects before 1.22.0May 15, 2022
Janet before 1.22.0 mishandles arrays.

Source: NVD, updated just now. Patch status is best-effort: NVD's fix version is compared against the latest version in winget, but the two version formats don't always align. Confirm with the vendor advisory before treating any specific build as safe.

See a CVE that affects your fleet? Push the patched version to Intune in one click with Pckgr - automated patching is the only way to keep up.

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Frequently asked questions

How do I install Janet on Windows?

Open Windows Terminal, PowerShell, or Command Prompt and run: winget install --id JanetLang.Janet --exact --version 1.41.2. winget downloads the installer from JanetLang and runs it. Requires Windows 10 (1809+) or Windows 11.

How do I install Janet silently for unattended deployment?

Add --silent and accept the agreements upfront: winget install --id JanetLang.Janet --exact 1.41.2 --silent --accept-package-agreements --accept-source-agreements. This is the variant Intune, Configuration Manager, and other deployment tools should use.

What are the silent install switches for Janet?

Janet uses MSI (WiX). Run the downloaded installer with: msiexec.exe /i janet-1.41.2-windows-x64-installer.msi /quiet /norestart. The silent switches are /quiet /norestart.

How do I uninstall Janet via winget?

Run: winget uninstall --id JanetLang.Janet --exact. Add --silent for unattended uninstalls. winget will use the registered uninstaller from Janet's Apps & Features entry.

Is Janet free?

Janet is distributed under MIT. Refer to the publisher (https://github.com/janet-lang/janet) for the full license terms - Wingetly itself does not charge for installation.

Does Janet work on Windows 10?

Yes, as long as your Windows 10 build supports winget (1809 or newer). winget ships with App Installer on Windows 10/11 and pulls Janet directly from the publisher.

How do I keep Janet up to date?

Run winget upgrade --id JanetLang.Janet --exact, or winget upgrade --all to update everything winget tracks. We index 5 versions of Janet from microsoft/winget-pkgs.

Recent versions

1.41.2latest
1.38.0
1.37.1
1.33.0
1.27.0