CVE-2026-11611 — MEDIUM (6.5)

Vulnerability Description

A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of service. Additional race conditions in plugin thread lifecycle can cause crashes during connection teardown or shutdown.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redhat	Directory Server	11.0
Redhat	389 Directory Server	-
Redhat	Enterprise Linux	7.0

Related Weaknesses (CWE)

CWE-400

References

https://access.redhat.com/security/cve/CVE-2026-11611Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2485424Issue TrackingVendor Advisory

FAQ

What is CVE-2026-11611?

CVE-2026-11611 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows unbounded memory growth when an authenticated client stops reading sync responses, enabling denial...

How severe is CVE-2026-11611?

CVE-2026-11611 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-11611?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Directory Server, Redhat 389 Directory Server, Redhat Enterprise Linux.