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Vulnerability · Published Oct 1, 2026 · Assigned by redhat

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

Medium 6.7

In plain English

A medium-severity OS command injection in Red Hat Satellite 6 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).

Severity (CVSS 3.1)6.7Medium
Exploit odds (30 days)0.5%top 55.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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., ;, |, &).

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Satellite 6.16 for RHEL 8 see references
Red Hat Red Hat Satellite 6.16 for RHEL 9 see references
Red Hat Red Hat Satellite 6.17 for RHEL 9 see references
Red Hat Red Hat Satellite 6.18 for RHEL 9 see references
Red Hat Red Hat Satellite 6.19 for RHEL 9 see references
Red Hat Red Hat Satellite 6 see references

Weakness: CWE-78 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

References