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Fencer Vulns
medium 6.7

CVE-2026-12545 json

Rubygem-hammer_cli: command injection via insecure editor invocation

published 2026-10-01 38 d ago modified 2026-11-02 6 d ago also EUVD-2026-90968

cvss
6.7
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

A flaw was found in rubygem-hammer_cli. A command injection vulnerability exists in Hammer CLI and the Railties (Ruby on Rails) component distributed with Satellite due to the insecure interpolation of the $EDITOR environment variable into the Ruby system() method. By passing a single interpolated string to system(), the application invokes a system shell (/bin/sh) that interprets shell metacharacters (e.g., ;, |, &).

Patch / fix

  • Red Hat Red Hat Satellite 6.16 for RHEL 8 0:3.12.0-2.el8sat
  • Red Hat Red Hat Satellite 6.16 for RHEL 9 0:3.12.0-2.el9sat
  • Red Hat Red Hat Satellite 6.17 for RHEL 9 0:3.14.0-2.el9sat
  • Red Hat Red Hat Satellite 6.18 for RHEL 9 0:3.16.0-2.el9sat
  • Red Hat Red Hat Satellite 6.19 for RHEL 9 0:3.18.0-2.el9sat
  • foreman satellite utils 6.17, satellite capsule 6.17, satellite 6.17 3.14.0.22-1.el9sat
  • satellite satellite utils 6.17, satellite capsule 6.17, satellite 6.17 6.17.12-1.el9sat
  • foreman-cli satellite utils 6.17, satellite 6.17 3.14.0.22-1.el9sat
  • foreman-ec2 satellite 6.17 3.14.0.22-1.el9sat
  • foreman-pcp satellite capsule 6.17, satellite 6.17 3.14.0.22-1.el9sat
  • python-lxml satellite capsule 6.17, satellite 6.17 5.3.1-2.el9pc
  • foreman-ovirt satellite 6.17 3.14.0.22-1.el9sat
  • foreman-redis satellite 6.17 3.14.0.22-1.el9sat

red hat advisories RHSA-2026:74505RHSA-2026:74504RHSA-2026:74506RHSA-2026:74503

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-12545 updated cvss 6.7

rubygem-hammer_cli: command injection via insecure editor invocation

  • Red Hat Satellite 6 rubygem-hammer_cli
    affected: workaround, no fix available
  • Red Hat Satellite 6.16 for RHEL 8 rubygem-hammer_cli 3.12.0-2.el8sat Red Hat Satellite 6.16 for RHEL 9 rubygem-hammer_cli 3.12.0-2.el9sat
    fixed: vendor fix RHSA-2026:74506
  • Red Hat Satellite 6.17 for RHEL 9 rubygem-hammer_cli 3.14.0-2.el9sat
    fixed: vendor fix RHSA-2026:74505
  • Red Hat Satellite 6.18 for RHEL 9 rubygem-hammer_cli 3.16.0-2.el9sat
    fixed: vendor fix RHSA-2026:74504
  • Red Hat Satellite 6.19 for RHEL 9 rubygem-hammer_cli 3.18.0-2.el9sat
    fixed: vendor fix RHSA-2026:74503
  • Red Hat Satellite 6.16 for RHEL 8 python-lxml 4.9.2-5.el8pc, foreman 3.12.0.23-1.el8sat, satellite 6.16.14-1.el8sat, python-sqlparse 0.6.0-1.el8pc, python3.11-lxml 4.9.2-5.el8pc, foreman-cli 3.12.0.23-1.el8sat, +27 more Red Hat Satellite 6.16 for RHEL 9 python-lxml 4.9.2-5.el9pc, foreman 3.12.0.23-1.el9sat, satellite 6.16.14-1.el9sat, python-sqlparse 0.6.0-1.el9pc, python3.11-lxml 4.9.2-5.el9pc, foreman-cli 3.12.0.23-1.el9sat, +27 more Red Hat Satellite 6.17 for RHEL 9 python-lxml 5.3.1-2.el9pc, foreman 3.14.0.22-1.el9sat, satellite 6.17.12-1.el9sat, python-sqlparse 0.6.0-1.el9pc, python3.11-lxml 5.3.1-2.el9pc, foreman-cli 3.14.0.22-1.el9sat, +26 more Red Hat Satellite 6.18 for RHEL 9 foreman 3.16.0.25-1.el9sat, satellite 6.18.10-1.el9sat, foreman-cli 3.16.0.25-1.el9sat, foreman-ec2 3.16.0.25-1.el9sat, foreman-pcp 3.16.0.25-1.el9sat, satellite-cli 6.18.10-1.el9sat, +21 more Red Hat Satellite 6.19 for RHEL 9 satellite 6.19.5-1.el9sat, foreman 3.18.0.14-1.el9sat, satellite-cli 6.19.5-1.el9sat, foreman-cli 3.18.0.14-1.el9sat, foreman-ec2 3.18.0.14-1.el9sat, foreman-pcp 3.18.0.14-1.el9sat, +23 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
38 d ago

Exploit prediction

0.52% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Affected products

  • Red Hat Red Hat Satellite 6.16 for RHEL 8
  • Red Hat Red Hat Satellite 6.16 for RHEL 9
  • Red Hat Red Hat Satellite 6.17 for RHEL 9
  • Red Hat Red Hat Satellite 6.18 for RHEL 9
  • Red Hat Red Hat Satellite 6.19 for RHEL 9
  • Red Hat Red Hat Satellite 6

Classification

Weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command

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.