untrusted comment: verify with openbsd-71-base.pub
RWR2eHwZTOEiTdmVXXYVmk8q0UIATCcINUhR/gTJqfluQtLVeq19D79OVRF0j35BCHRaqDDECFVax2a5gmthOXOn/K3Wmm96DgM=

OpenBSD 7.1 errata 017, December 16, 2022:

Removing a domain can result in an out-of-bounds write in acme-client(8).

Apply by doing:
   signify -Vep /etc/signify/openbsd-71-base.pub -x 017_acme.patch.sig \
       -m - | (cd /usr/src && patch -p0)

And then rebuild and install acme-client
   cd /usr/src/usr.sbin/acme-client
   make obj
   make
   make install

Index: usr.sbin/acme-client/revokeproc.c
===================================================================
RCS file: /cvs/src/usr.sbin/acme-client/revokeproc.c,v
diff -u -p -r1.19 revokeproc.c
--- usr.sbin/acme-client/revokeproc.c   22 Nov 2021 08:26:08 -0000      1.19
+++ usr.sbin/acme-client/revokeproc.c   14 Dec 2022 17:25:11 -0000
@@ -239,6 +239,7 @@ revokeproc(int fd, const char *certfile,
                               goto out;
                       }
                       force = 2;
+                       continue;
               }
               if (found[j]++) {
                       if (revocate) {