2.4.59
Fixes:
2021-27212 Fixed slapd validity checks for issuerAndThisUpdateCheck
Enable experimental support for LDAP over UDP (LDAP_CONNECTIONLESS)
Fix coverity issues
Build without MP_2 support

2.4.57
Fixes:
2020-36221 Fixed slapd crashes in Certificate Exact Assertion processing
2020-36222 Fixed slapd assertion failures in saslAuthzTo validation
2020-36223 Fixed slapd crash in Values Return Filter control handling
2020-36224 Fixed slapd crashes in saslAuthzTo processing
2020-36225 Fixed slapd crashes in saslAuthzTo processing
2020-36226 Fixed slapd crashes in saslAuthzTo processing
2020-36227 Fixed slapd infinite loop with Cancel operation
2020-36228 Fixed slapd crash in Certificate List Exact Assertion processing
2020-36229 Fixed slapd crash in X.509 DN parsing
2020-36230 Fixed slapd assertion failure in X.509 DN parsing

2.4.56 (Fixes: CVE-2020-25709, CVE-2020-25710)
do not strip binaries to produce correct .debuginfo packages (ALT#27895)
move common file to openldap-common (ALT#18754)

2.4.55 (Fixes: CVE-2020-25692)

2.4.54 (Fixes: CVE-2020-12243)

rebuild with new perl 5.30.2 and libdb4.8

sasl fix fixed

sasl in chroot fixed

2.4.48 (Fixes: CVE-2019-13057, CVE-2019-13565)

Fixed LDAPI with SASL_NOCANON (RH BZ: #960222).

2.4.47

rebuild with new perl 5.28.1

2.4.46
build with openssl-1.1
build without tcp_wrappers

/etc/sysconfig/ldap: use SLAPD_BACKEND= for ldap-dn create calls.

fix default value of TLS_REQCERT (NEVER -> DEMAND) in ldap.conf

added support OLC (cn=config or /etc/openldap/slapd.d);
added backup/restore scripts for slapd.d directory;
now used mdb backend by default.