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Fencer Vulns
high 8.0

CVE-2026-59680 json

yast2-users: OS command injection via LDAP-supplied shadowLastChange/shadowExpire attribute

published 2026-09-01 2 mo ago modified 2026-09-02 2 mo ago also EUVD-2026-68996

cvss
8.0
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

An OS command injection vulnerability was found in yast2-users. When displaying the "Password Settings" tab of a user, get_password_term() in src/include/users/dialogs.rb read the shadowLastChange and shadowExpire fields with GetString(), which performs no numeric validation, and passed the resulting string to format_days_after_epoch(). That helper interpolated the value into a shell command executed via Ruby backticks without quoting or escaping.

Impact: an administrator who manages users against an external/federated LDAP directory via `yast2 users` triggers root command execution the moment they view or edit that particular user's "Password Settings" tab. No "join domain" or trust setup is required, just browsing/editing one user entry.

This issue affects yast2-users through 5.0.8.

Patch / fix

  • yast2-users SLE Module for Basesystem 15 SP7, SLE Installer Updates 15 SP7 4.7.2-150700.3.8.1
  • yast2-users SLES for SAP 15 SP5, SLES 15 SP5-LTSS, SLE High Performance Computing 15 SP5-LTSS +1 more 4.5.8-150500.3.11.1
  • yast2-users SLES 15 SP4-LTSS, SLE Installer Updates 15 SP4, SLE High Performance Computing 15 SP4-LTSS +1 more 4.4.17-150400.3.21.1
  • yast2-users SLES for SAP 15 SP6, SLES 15 SP6-LTSS 4.6.7-150600.3.6.1
  • yast2-users SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 3.2.20-3.3.1

suse advisories SUSE-SU-2026:3949-1SUSE-SU-2026:3948-1SUSE-SU-2026:3947-1SUSE-SU-2026:3946-1SUSE-SU-2026:3945-1

  • yast2-users openSUSE Tumbleweed 5.0.9-1.1

opensuse advisories openSUSE-SU-2026:11978-1

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2 mo ago

Exploit prediction

1.58% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CNA 4.0 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 4.0 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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

Affected products

  • SUSE yast2-users

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command
  • CWE-1287 Improper Validation of Specified Type of Input

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.