https://bugs.openldap.org/show_bug.cgi?id=9753
--- Comment #14 from Quanah Gibson-Mount quanah@openldap.org --- (In reply to Michael Ströder from comment #13)
(In reply to Howard Chu from comment #12)
ACL evaluation performs no search operations; it only compares a filter against the entry currently being checked. There is no security impact from this.
What about set-based ACLs with ldap://... parts?
And IMO correct functional behaviour of slapo-unique and slapo-constraint is also security-relevant.
Did you enable 64-bit indexing in your configuration?