CVE Alert: CVE-2026-12540 – Red Hat

A flaw was found in Foreman. A command injection vulnerability exists in the foreman-rake errors:fetch_log task. The request_id parameter is passed to an underlying system command (typically grep) without adequate shell neutralization. While the task is intended to fetch specific log entries, an attacker with sudo permissions to execute this rake task can inject shell metacharacters (such as ;, ", or |) to break out of the intended command and execute arbitrary code.

**Risk verdict:** Treat this as a high-impact, locally exploitable issue requiring prompt remediation; the supplied data does not establish known exploitation, a public proof of concept, or an EPSS estimate.

**Why this matters:** Successful exploitation could give an already privileged operator arbitrary code execution, potentially compromising the management host and systems or credentials it controls. This is most relevant where delegated operational access is broader than intended, rather than as a likely unauthenticated entry point.

**Most likely attack path:** An attacker needs local access and high privileges, specifically permission to run the affected administrative task; no additional user action is indicated. Low attack complexity makes misuse plausible once that access exists, and the changed scope means consequences may extend beyond the task’s own security boundary.

**Who is most exposed:** Organisations running central infrastructure-management servers or associated management nodes, especially where administrators or automation accounts have delegated task execution.

Review sudo and audit logs for executions of `foreman-rake errors:fetch_log`, including the invoking account and supplied arguments.

Alert on shell metacharacters in `request_id` values recorded in task or application logs.

Inspect process telemetry for unexpected shells or child processes launched by the task, particularly command-line utilities with unusual arguments.

Check for subsequent privilege changes, access to sensitive files, or unexpected outbound connections from the management host.

Mitigation and prioritisation

Apply the vendor’s fixed package promptly; confirm the applicable remediation through the vendor advisory.

Until updated, restrict sudo access to this task to trusted administrators and review delegated permissions.

No practical workaround is identified; avoid relying on input filtering as a substitute for updating.

Test the package change in a representative environment, then prioritise management nodes with broad access or automation credentials.

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