Shell Command Injection Vulnerability in Cockpit 389 Console by Red Hat
CVE-2026-19843

8.4HIGH

Key Information:

Vendor

Red Hat
Status
Red Hat Directory Server 11.7 E4s For Rhel 8
Red Hat Directory Server 11.9 For Rhel 8
Red Hat Directory Server 12.2 E4s For Rhel 9
Red Hat Directory Server 12.4 E4s For Rhel 9
Vendor
CVE Published:
7 September 2026

What is CVE-2026-19843?

A vulnerability exists in the Cockpit 389 Console due to improper handling of LDAP entries in the ldapsearch command. This flaw allows an LDAP user with permissions to create or rename directory entries to inject shell metacharacters into the distinguished name (DN). When the Cockpit administrator accesses this entry, the constructed shell command executes with root privileges on the directory server, potentially leading to unauthorized actions and system compromise. This vulnerability underscores the need for stringent input validation and escaping mechanisms in web applications.

Affected Version(s)

Red Hat Directory Server 11.7 E4S for RHEL 8 8080020260903102346.f969626e

Red Hat Directory Server 11.9 for RHEL 8 8100020260904171440.37ed7c03

Red Hat Directory Server 12.2 E4S for RHEL 9 9020020260903155914.1674d574

References

https://access.redhat.com/errata/RHSA-2026:64768
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:64769
vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:64779
vendor-advisoryx_refsource_REDHAT

CVSS V3.1

Score:
8.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Andrew Rukin (Arenadata) for reporting this issue.
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