As Minecraft 1.18 has now been released, I can confirm that v1.6.2 works on 1.18, and very likely older versions too.
No new jar update required.

Removed the '/rbznvreload' command in favour of '/nv reload'
The plugin will now tell you if your config.yml is outdated when you reload.
Also made some minor code optimisations (see our GitHub)
The plugin is now natively using 1.17.

- Made minor improvements to the plugin's code (more info on GitHub).
This plugin already supports 1.17 without requiring an update.

• Added a configurable command cooldown (default is 0 seconds)
• Added cooldown bypass permission rbznv.cooldown.bypass

If you want to use this, create a new config.yml key "cooldown" and give it a number

Forgot to update config-version for 1.4 which reminds users updating from 1.3 that they need to update their config.yml

• Added a customizable Incorrect Arguments message

If you want to be able to customize this message, you will need to add it to your config.yml at messages.incorrect-usage

• Added bStats metrics, which can be found at https://bstats.org/plugin/bukkit/rbzNightVision/9704

If you wish to disable bStats metrics tracking, you can do so in /plugins/bStats/config.yml

THIS UPDATE WILL REQUIRE YOU TO RESET YOUR CONFIG.YML!

• Rewrote config.yml to be more organized in general
• Added values messages.other-player.nvenable-sender and messages.other-player.nvdisable-sender which are sent to the sender when using /nv <player>, and both have a configurable placeholder %target%
• Added value config-version, which will allow me to send a warning to console on startup that config.yml is outdated after future updates

If you don't want to reset your config.yml:
- Stop your server
- Rename config.yml to anything else (such as configOLD.yml)
- Start your server
- Copy your own options to the newly generated config.yml
- Run /rbznvreload to make the changes take effect