CVE-2026-12545
Rubygem-hammer_cli: command injection via insecure editor invocation
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., ;, |, &).
Fixes and workarounds
Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: CNA: redhatAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| Red Hat Satellite 6.16 for RHEL 8 Red Hat rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.12.0-2.el8sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.16 for RHEL 9 Red Hat rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.12.0-2.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.17 for RHEL 9 Red Hat rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.14.0-2.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.18 for RHEL 9 Red Hat rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.16.0-2.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6.19 for RHEL 9 Red Hat rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
≥ 0:3.18.0-2.el9sat; < * (unaffected, rpm)
Other versions: affected |
CNA: redhat |
| Red Hat Satellite 6 Red Hat satellite-utils:el8/rubygem-hammer_cli
https://access.redhat.com/downloads/content/package-browser/ |
Range not reported
Other versions: affected |
CNA: redhat |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 6.7 medium |
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H | CNA: redhat |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://access.redhat.com/errata/RHSA-2026:74503CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74504CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74505CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:74506CNA: redhat · vendor-advisory, x_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2026-12545CNA: redhat · vdb-entry, x_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2489993CNA: redhat · issue-tracking, x_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2026/10/07/5ADP: CVE
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