Red Hat Directory Server/Enterprise Linux 389-ds-base os command injection

Summaryinfo

A vulnerability was found in Red Hat Directory Server and Enterprise Linux. It has been declared as very critical. Affected by this vulnerability is an unknown functionality of the component 389-ds-base. Such manipulation leads to os command injection. This vulnerability is listed as CVE-2026-19843. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in Red Hat Directory Server and Enterprise Linux (version now known). It has been rated as very critical. Affected by this issue is some unknown processing of the component 389-ds-base. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in 389-ds-base. The Cockpit 389 Console's LDAP editor constructs an ldapsearch command by embedding an LDAP entry's distinguished name (DN) into a shell command string without proper escaping. An LDAP user with delegated privileges to create or rename directory entries could craft a malicious DN containing shell metacharacters. When a Cockpit administrator subsequently views the entry in the 389 Console, the embedded shell command executes with root privileges on the directory server host.

The advisory is shared for download at access.redhat.com. This vulnerability is handled as CVE-2026-19843 since 08/14/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are necessary for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 09/07/2026). The MITRE ATT&CK project declares the attack technique as T1202.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Directory Service Software

Vendor

• Red Hat

Name

• Directory Server
• Enterprise Linux

License

• open-source

Website

• Vendor: https://www.redhat.com/

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