CVE-2026-18922: reset the SASL auxprop context after a failed one-shot bind so a
stale canon_user identity cannot be inherited by a later successful bind
CVE-2026-18355: validate the minimum SASL packet length in sasl_io_start_packet to
prevent an unsigned underflow in sasl_io_read_packet
CVE-2026-76560: reject anonymous clients before evaluating the SELFDN, USERDNATTR
and LDAPURL ACI bind rules
CVE-2026-18453: check the paged-results backend pointer for NULL before reusing a
slot in op_shared_search