Errata patches for xenodm have been released for OpenBSD 6.5 and 6.6.

xenodm uses the libc authentication layer incorrectly.

Binary updates for the amd64, i386, and arm64 platforms are available
via the syspatch utility. Source code patches can be found on the
respective errata page:

https://www.openbsd.org/errata65.html
https://www.openbsd.org/errata66.html

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