CVE-2026-12540: A flaw was found in Foreman

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HIGH 8.2WATCHLISTUPGRADEMITIGATE

CVE-2026-12540 is a high-severity flaw (CVSS 8.2) affecting satellite, foreman. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 ex

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.2 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	High
User interaction	None
EPSS exploit chance	1.2% (top 31%)
CISA exploited list	No
Weakness	CWE-78
Published	2026-10-01
Last modified	2026-10-08

Publisher (CNA): Red Hat, Inc. · Vendor: redhat · theforeman

Last updated 2026-10-08 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-01 17:17 UTCPublished CVE record published
2026-10-08 13:16 UTCUpdated Record last modified

redhat satellite UPGRADE

Affected: >= 6.16 and < 6.16.4 · >= 6.17 and < 6.17.12 · >= 6.19 and < 6.19.5 · >= 6.18 and < 6.18.10 · 6.0

Fixed in: 6.16.4, 6.17.12, 6.18.10, 6.19.5

Safe to downgrade to: a release before 6.0

1. Check installed version

apt-cache policy satellite || rpm -q satellite || satellite --version

2. UPGRADE to 6.16.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade satellite

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade satellite

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 6.0 (Debian / Ubuntu)

apt-cache madison satellite sudo apt install satellite=<VERSION_BEFORE_6.0> sudo apt-mark hold satellite

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list satellite sudo dnf downgrade satellite-<VERSION_BEFORE_6.0> sudo dnf versionlock add satellite

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

theforeman foreman MITIGATE

Affected: all versions

Fixed in: no fixed release known

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy foreman || rpm -q foreman || foreman --version

No fixed or unaffected release known

Apply the vendor mitigation from the advisory, disable the affected feature, or restrict network access.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-12540?

satellite: upgrade to 6.16.4, 6.17.12, 6.18.10, 6.19.5; foreman: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-12540 being exploited?

CVE-2026-12540 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-12540 affect?

CVE-2026-12540 affects satellite, foreman. Severity is high (CVSS 8.2). 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. Whil

How urgent is CVE-2026-12540?

Priority 51/100. High severity; On your watchlist

Software pages

Sudo vulnerabilities

Related CVEs

CVE-2026-12112 HIGH 7.8 DOWNGRADE MITIGATE A flaw was found in the foreman-mcp-server
CVE-2026-13316 MEDIUM 4.4 UPGRADE MITIGATE A flaw has been found in foreman when HTTP parameters are modified in http_proxies_controller and http_proxy f
CVE-2026-96658 HIGH 8.8 UPGRADE UPGRADE A flaw was found in Foreman
CVE-2026-96659 CRITICAL 9.1 UPGRADE UPGRADE A flaw was found in Foreman
CVE-2026-12542 MEDIUM 5.3 UPGRADE UPGRADE A flaw was found in Foreman

References

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