dovecot - Jan 2022 - PLAIN password scheme issue with {}

Hello,

Using PLAIN password scheme and a user having a password with {} for 
example {RnDR8DaD} causes the authentication to fail:

auth-worker(85632): Error: conn unix:auth-worker (uid=143): 
auth-worker<3333>: sql(user at
domain.com,123.45.68.78,<EBh0ouPWULvTF5AQ>):
Unknown scheme RnDR8DaD

Is there some sort of a workaround for this other than requesting user 
not to use {} at beginning and end of their password?

> On 31/01/2022 19:34 Kris von Mach <mach at swishmail.com> wrote:
> 
>  
> Hello,
> 
> Using PLAIN password scheme and a user having a password with {} for 
> example {RnDR8DaD} causes the authentication to fail:
> 
> auth-worker(85632): Error: conn unix:auth-worker (uid=143): 
> auth-worker<3333>: sql(user at
domain.com,123.45.68.78,<EBh0ouPWULvTF5AQ>):
> Unknown scheme RnDR8DaD
> 
> Is there some sort of a workaround for this other than requesting user 
> not to use {} at beginning and end of their password?
Add {PLAIN} to it, so {PLAIN}{RnDR8DaD}

Aki