CVE
CVE-2026-18922
RHSA-2026:64791: 389-ds:1.4 security, bug fix, and enhancement update (Critical)
389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.
Security Fix(es):
- 389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length lower-bound underflow in sasliostart_packet() (CVE-2026-18355)
- 389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USEONEBACKEND control in opsharedsearch (CVE-2026-18453)
- 389-ds-base: 389-ds-base: SASL PLAIN authentication allows privilege escalation to Directory Manager via stale identity in Cyrus SASL auxiliary property (CVE-2026-18922)
- 389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN (CVE-2026-76560)
Bug Fix(es) and Enhancement(s):
- lib389: set nsDS5ReplicaBindDNGroup before ensure_agreement() [rhel-8.10.z] (JIRA:RHEL-244463)
- fix breaks replication total init when nsDS5ReplicaBindDNGroup is set after agreement creation [rhel-8.10.z] (JIRA:RHEL-248762)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Package Versions Affected
Package Version
patch Availability
No items found.
Automatically patch vulnerabilities without upgrading
Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request
CVSS Version
Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.8
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
C
H
U
-
C
H
U
-
Related Resources
No items found.
References
https://access.redhat.com/errata/RHSA-2026:64791, https://access.redhat.com/security/cve/CVE-2026-18355, https://access.redhat.com/security/cve/CVE-2026-18453, https://access.redhat.com/security/cve/CVE-2026-18922, https://access.redhat.com/security/cve/CVE-2026-76560