Vulnerability · Published Sep 1, 2026 · Assigned by suse

CVE-2026-59681yast2-auth-client: OS command injection via unsanitized Organizational Unit / dnsHostName in AD join

High 8.8

In plain English

A high-severity OS command injection in yast2-auth-client from SUSE. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 74% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.5%top 25.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A OS command injection vulnerability in yast2-auth-client allows an attacker who controls Active Directory configuration values to execute arbitrary commands as root on the configured host. Auth::AuthConf in src/lib/auth/authconf.rb assembles the Samba net ads join, net ads lookup -S and net ads testjoin invocations by interpolating configuration values into a single command string and passing that string to Open3.popen2 / Open3.capture2, which causes Ruby to run it through /bin/sh. The Organizational Unit (ou), dnshostname, AD user name and AD domain name values are neither validated nor shell-quoted.

Affected products (as reported)

Vendor	Product	Versions
SUSE	yast2-auth-client	0 – through 5.0.4

Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://bugzilla.suse.com/show_bug.cgi?id=1272775 issue-tracking