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CVE-2026-12545 is an OS command injection vulnerability in rubygem-hammer_cli (Hammer CLI) and the Ruby on Rails Railties component distributed with Red Hat Satellite. The affected editor-invocation code interpolates the EDITOR environment variable into a single string passed to Ruby's system() method. This invokes a system shell that interprets embedded shell metacharacters rather than treating the editor value solely as an executable and arguments. An attacker who can influence the environment variable can cause arbitrary shell commands to execute with the privileges of the affected application.
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A command-injection vulnerability in rubygem-hammer_cli / Hammer CLI and the Satellite-distributed Railties component. Unsafe interpolation of the $EDITOR environment variable into Ruby's system() method causes execution through /bin/sh, allowing shell metacharacters to be interpreted.
Command injection vulnerability in Hammer CLI caused by insecure editor invocation. The advisory supplies an updated rubygem-hammer_cli package.
Insecure editor invocation in hammer_cli permits command injection. Updated hammer_cli packages are supplied in the advisory.
Insecure editor invocation in Hammer CLI allows command injection. Updated rubygem-hammer_cli packages address the vulnerability.
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Cross-references every affected SKU, including bundled OEM variants.
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