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CVE-2026-12545— Rubygem-hammer_cli: command injection via insecure editor invocation

Quick assessment

Affected
Red Hat Red Hat Satellite 6.16 for RHEL 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 rubygem-hammer_cli 中发现了一个漏洞。由于将 $EDITOR 环境变量不安全地插入到 Ruby 的 system() 方法中，Hammer CLI 以及随 Satellite 分发的 Railties（Ruby on Rails）组件中存在命令注入漏洞。通过向 system() 传递单个经过插值的字符串，应用程序会调用系统 shell（/bin/sh），该 shell 会解释执行 shell 元字符（例如 ;、

CVSS 6.7 · Medium EPSS 0.51% · P41

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell

Affected Version Matrix 6

VendorProduct Version RangeStatus
Red Hat Red Hat Satellite 6 any affected
Red Hat Red Hat Satellite 6.16 for RHEL 8 0:3.12.0-2.el8sat< * unaffected
Red Hat Red Hat Satellite 6.16 for RHEL 9 0:3.12.0-2.el9sat< * unaffected
Red Hat Red Hat Satellite 6.17 for RHEL 9 0:3.14.0-2.el9sat< * unaffected
Red Hat Red Hat Satellite 6.18 for RHEL 9 0:3.16.0-2.el9sat< * unaffected
Red Hat Red Hat Satellite 6.19 for RHEL 9 0:3.18.0-2.el9sat< * unaffected
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I. Basic Information for CVE-2026-12545

Vulnerability Information
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Vulnerability Title
Rubygem-hammer_cli: command injection via insecure editor invocation
Source: CVE Program / CVE List V5
Vulnerability Description
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., ;, |, &).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Satellite 6.16 for RHEL 8 0:3.12.0-2.el8sat ~ * cpe:/a:redhat:satellite:6.16::el8
Red Hat Red Hat Satellite 6.16 for RHEL 9 0:3.12.0-2.el9sat ~ * cpe:/a:redhat:satellite:6.16::el8
Red Hat Red Hat Satellite 6.17 for RHEL 9 0:3.14.0-2.el9sat ~ * cpe:/a:redhat:satellite:6.17::el9
Red Hat Red Hat Satellite 6.18 for RHEL 9 0:3.16.0-2.el9sat ~ * cpe:/a:redhat:satellite:6.18::el9
Red Hat Red Hat Satellite 6.19 for RHEL 9 0:3.18.0-2.el9sat ~ * cpe:/a:redhat:satellite:6.19::el9
Red Hat Red Hat Satellite 6 - cpe:/a:redhat:satellite:6

II. Public POCs for CVE-2026-12545

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III. Intelligence Information for CVE-2026-12545

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Vendor Advisories for CVE-2026-12545 (6)

Same Patch Batch · Red Hat · 2026-10-01 · 18 CVEs total

CVE-2026-96658 9.9 CRITICAL Foreman: safemode bypass leading to rce
CVE-2026-96659 9.1 CRITICAL Foreman: excessive permissions for viewer role on preview
CVE-2026-86345 9.0 CRITICAL 389-ds-base: 389-ds-base: starttls plaintext-buffer retention allows on-path attacker to f
CVE-2026-12405 8.8 HIGH Rubygem-foreman_remote_execution: command injection in job invocations via effective_user
CVE-2026-12540 8.2 HIGH Foreman: command injection in foreman-rake errors:fetch_log via request_id parameter
CVE-2026-12541 8.2 HIGH Foreman: command injection in foreman-rake database tasks
CVE-2026-12544 7.7 HIGH Foreman: ssti and insecure deserialization in foreman-rake configuration
CVE-2026-86344 7.5 HIGH 389-ds-base: 389-ds-base: unauthenticated worker-thread-pool exhaustion via completed-oper
CVE-2026-12423 7.5 HIGH Foreman: unauthenticated information disclosure via provisioning token validation flaw
CVE-2026-96577 7.1 HIGH Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without a
CVE-2026-56097 6.5 MEDIUM Rubygem-katello: sql injection in registry proxy via labels
CVE-2026-103884 6.5 MEDIUM Keycloak-services: keycloak-services: path traversal in x.509 crl distribution point allow
CVE-2026-83589 6.1 MEDIUM Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect
CVE-2026-103754 5.9 MEDIUM Ansible-runner: ansible-runner: path traversal and symlink escape in unstream_dir() allows
CVE-2026-103641 5.5 MEDIUM Gegl: gegl04: gegl: out-of-bounds read in the radiance hdr uncompressed scanline decoder
CVE-2026-12542 5.3 MEDIUM Foreman: command injection in foreman-tail
CVE-2026-56098 4.3 MEDIUM Rubygem-katello: improper authorization logic allows resource enumeration

IV. Related Vulnerabilities

Same product: Red Hat Satellite 6.16 for RHEL 8
Same vendor: Red Hat
Same weakness: CWE-78

V. Comments for CVE-2026-12545

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