This update for 389-ds to version 1.4.0.26 fixes the following issues:
Security issues fixed:
CVE-2016-5416: Fixed an information disclosure where a anonymous user could read the default ACI (bsc#991201).
CVE-2018-1054: Fixed a denial of service via search filters in SetUnicodeStringFromUTF_8() (bsc#1083689).
CVE-2018-1089: Fixed a buffer overflow via large filter value (bsc#1092187).
CVE-2018-10871: Fixed an information disclosure in certain plugins leading to the disclosure of plaintext password to an privileged attackers (bsc#1099465).
CVE-2018-14638: Fixed a denial of service through a crash in delete_passwdPolicy () (bsc#1108674).
CVE-2018-14648: Fixed a denial of service caused by malformed values in search queries (bsc#1109609).
CVE-2018-10935: Fixed a denial of service related to ldapsearch with server side sort (bsc#1105606).
CVE-2019-3883: Fixed a denial of service caused by hanging LDAP requests over TLS (bsc#1132385).