CVE-2026-19843: Command Injection (CVSS 8.4)

Description

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.

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CVSS v3.1 Score

8.4

HIGH

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

EPSS — Exploit Prediction

0.0048

Probability of exploitation

0.40%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-78 OS Command Injection

References

Other References

https://access.redhat.com/errata/RHSA-2026:64768 https://access.redhat.com/errata/RHSA-2026:64769 https://access.redhat.com/errata/RHSA-2026:64779 https://access.redhat.com/errata/RHSA-2026:64780 https://access.redhat.com/errata/RHSA-2026:64782 https://access.redhat.com/errata/RHSA-2026:64792 https://access.redhat.com/errata/RHSA-2026:64793 https://access.redhat.com/errata/RHSA-2026:65375 https://access.redhat.com/security/cve/CVE-2026-19843 https://bugzilla.redhat.com/show_bug.cgi?id=2515965

Frequently Asked Questions

What is CVE-2026-19843? +

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. It has a CVSS v3.1 base score of 8.4 (HIGH).

How severe is CVE-2026-19843? +

CVE-2026-19843 has a CVSS v3.1 score of 8.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0048, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-19843? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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