CVE-2026-59681
yast2-auth-client: OS command injection via unsanitized Organizational Unit / dnsHostName in AD join
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Passive
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
yast2-auth-client: OS command injection via unsanitized Organizational Unit / dnsHostName in AD join
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.
- Record
CVE-2026-59681- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
EUVDEUVD-2026-69001
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.
- Record
EUVD-2026-69001- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-hhmf-6c6g-6xc3
A OS command injection vulnerability in yast2-auth-client allows an attacker who controls Active...
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.
- Record
GHSA-hhmf-6c6g-6xc3- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-59681- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 8.8 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-78
- Updated
- 2026-11-02
OSVopenSUSE-SU-2026:11938-1 No score
yast2-auth-client-5.0.5-1.1 on GA media
These are all security issues fixed in the yast2-auth-client-5.0.5-1.1 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2026:11938-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:3893-1 No score
Security update for yast2-auth-client
This update for yast2-auth-client fixes the following issue:
Update to version 3.3.22.
- CVE-2026-59681: OS command injection via unsanitized Organizational Unit/dnsHostName in AD join (AutoYaST-reachable) (bsc#1272775).
- Record
SUSE-SU-2026:3893-1- Updated
- 2026-11-02
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OSVSUSE-SU-2026:3894-1 No score
Security update for yast2-auth-client
This update for yast2-auth-client fixes the following issue:
Update to version 4.4.6.
- CVE-2026-59681: OS command injection via unsanitized Organizational Unit/dnsHostName in AD join (AutoYaST-reachable) (bsc#1272775).
- Record
SUSE-SU-2026:3894-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:3895-1 No score
Security update for yast2-auth-client
This update for yast2-auth-client fixes the following issue:
Update to version 4.5.5.
- CVE-2026-59681: OS command injection via unsanitized Organizational Unit/dnsHostName in AD join (AutoYaST-reachable) (bsc#1272775).
- Record
SUSE-SU-2026:3895-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:3901-1 No score
Security update for yast2-auth-client
This update for yast2-auth-client fixes the following issue:
Update to version 4.6.3.
- CVE-2026-59681: OS command injection via unsanitized Organizational Unit/dnsHostName in AD join (AutoYaST-reachable) (bsc#1272775).
- Record
SUSE-SU-2026:3901-1- Updated
- 2026-11-02
OSVSUSE-SU-2026:3914-1 No score
Security update for yast2-auth-client
This update for yast2-auth-client fixes the following issue:
Update to version 4.7.1.
- CVE-2026-59681: OS command injection via unsanitized Organizational Unit/dnsHostName in AD join (AutoYaST-reachable) (bsc#1272775).
- Record
SUSE-SU-2026:3914-1- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
yast2-auth-clientSUSE:Linux Enterprise Server 12 SP5-LTSS |
before 3.3.22-3.15.1 | 3.3.22-3.15.1 |
yast2-auth-clientSUSE:Linux Enterprise Server LTSS Extended Security 12 SP5 |
before 3.3.22-3.15.1 | 3.3.22-3.15.1 |
yast2-auth-clientSUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS |
before 4.4.6-150400.3.19.1 | 4.4.6-150400.3.19.1 |
yast2-auth-clientSUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS |
before 4.4.6-150400.3.19.1 | 4.4.6-150400.3.19.1 |
yast2-auth-clientSUSE:Linux Enterprise Server 15 SP4-LTSS |
before 4.4.6-150400.3.19.1 | 4.4.6-150400.3.19.1 |
yast2-auth-clientSUSE:Linux Enterprise Server for SAP Applications 15 SP4 |
before 4.4.6-150400.3.19.1 | 4.4.6-150400.3.19.1 |
yast2-auth-clientSUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS |
before 4.5.5-150500.3.9.1 | 4.5.5-150500.3.9.1 |
yast2-auth-clientSUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS |
before 4.5.5-150500.3.9.1 | 4.5.5-150500.3.9.1 |
yast2-auth-clientSUSE:Linux Enterprise Server 15 SP5-LTSS |
before 4.5.5-150500.3.9.1 | 4.5.5-150500.3.9.1 |
yast2-auth-clientSUSE:Linux Enterprise Server for SAP Applications 15 SP5 |
before 4.5.5-150500.3.9.1 | 4.5.5-150500.3.9.1 |
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| Package | Affected | Fixed |
|---|---|---|
yast2-auth-clientSUSE:Linux Enterprise Server 15 SP6-LTSS |
before 4.6.3-150600.3.12.1 | 4.6.3-150600.3.12.1 |
yast2-auth-clientSUSE:Linux Enterprise Server for SAP Applications 15 SP6 |
before 4.6.3-150600.3.12.1 | 4.6.3-150600.3.12.1 |
yast2-auth-clientSUSE:Linux Enterprise Module for Basesystem 15 SP7 |
before 4.7.1-150700.3.9.1 | 4.7.1-150700.3.9.1 |
yast2-auth-clientopenSUSE:Tumbleweed |
before 5.0.5-1.1 | 5.0.5-1.1 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-59681 is a high vulnerability (CVSS 8.7) in Suse Yast2-auth-client, published August 31, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.48%, the 74th percentile. Fixed in yast2-auth-client 3.3.22-3.15.1.
References
bugzilla.suse.com/show_bug.cgi?id=1272775
nvd.nist.gov/vuln/detail/CVE-2026-59681
github.com/advisories/GHSA-hhmf-6c6g-6xc3
suse.com/support/update/announcement/2026/suse-su-20263893-1
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