Network operational with different native vlans on each side of the trunk

I work with a network that recently underwent some changes, one being a native vlan change, and this is what I observed. Yes, I am aware that you are supposed to have your command #switchport trunk native vlan [vlan #] identical on each side of the trunk, but is it possible for the access layer to be completely operational if the native vlan is different? I know it's possible, but why is it working?

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networker050184

Having a mismatch isn't necessarily going to break anything and it will not prevent the trunk from operating. If a trunk receives untagged frames it is going to assume they belong to the VLAN assigned as native.

OfWolfAndMan

Should've done my homework on this one. Essentially I assume if different native vlan numbers are present, its possible to trunk, but just a greater security vulnerability having two native vlans rather than one. Thanks for the info!