Denial of Service Vulnerability in 389 Directory Server by Red Hat
CVE-2026-11611

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Directory Server 11
Red Hat Directory Server 12
Red Hat Directory Server 13
Red Hat Enterprise Linux 10
Vendor
CVE Published:
8 June 2026

What is CVE-2026-11611?

A vulnerability exists in the 389 Directory Server related to the Content Synchronization persistent search plugin. This flaw allows for unbounded memory growth when an authenticated client fails to read sync responses, ultimately resulting in a denial of service. Furthermore, race conditions in the plugin's thread lifecycle can lead to unexpected crashes during connection teardown or server shutdown. Organizations using affected versions should evaluate their risk and consider implementing mitigations to prevent potential disruption.

References

https://access.redhat.com/security/cve/CVE-2026-11611
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485424
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.