CVE-2026-5136: A flaw was found in Foreman

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HIGH 8.8WATCHLISTUPGRADEUPGRADE

CVE-2026-5136 is a high-severity flaw (CVSS 8.8) 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. The Usergroup model in Foreman does not properly validate role assignments against the calling user's permissions. This allows an authenticated user with usergroup management permissions to attach arbitrary roles, including administrative roles, to a user group and then add themselves as a member. Successful exploitation of this vulnerability leads to full privilege escalation, granting the attacker administrator-leve

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 54%)
CISA exploited list	No
Weakness	CWE-266
Published	2026-07-01
Last modified	2026-07-09

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

Last updated 2026-07-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-01 14:16 UTCPublished CVE record published
2026-07-09 02:39 UTCUpdated Record last modified

redhat satellite UPGRADE

Affected: >= 6.16 and < 6.16.10 · >= 6.17 and < 6.17.9 · >= 6.18 and < 6.18.7 · >= 6.19 and < 6.19.2

Fixed in: 6.16.10, 6.17.9, 6.18.7, 6.19.2

Safe to downgrade to: a release before 6.16

1. Check installed version

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

2. UPGRADE to 6.16.10 (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 6.16 (Debian / Ubuntu)

apt-cache madison satellite sudo apt install satellite=<VERSION_BEFORE_6.16> 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_6.16> 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 UPGRADE

Affected: < 3.18.2 · >= 3.19.0 and < 3.19.1

Fixed in: 3.18.2, 3.19.1

Safe to downgrade to: a release before 3.19.0

1. Check installed version

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

2. UPGRADE to 3.18.2 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade foreman

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 3.19.0 (Debian / Ubuntu)

apt-cache madison foreman sudo apt install foreman=<VERSION_BEFORE_3.19.0> sudo apt-mark hold foreman

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

dnf --showduplicates list foreman sudo dnf downgrade foreman-<VERSION_BEFORE_3.19.0> sudo dnf versionlock add foreman

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.

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-2026-5136?

satellite: upgrade to 6.16.10, 6.17.9, 6.18.7, 6.19.2; foreman: upgrade to 3.18.2, 3.19.1. Exact commands for each OS are on this page.

Is CVE-2026-5136 being exploited?

CVE-2026-5136 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-2026-5136 affect?

CVE-2026-5136 affects satellite, foreman. Severity is high (CVSS 8.8). A flaw was found in Foreman. The Usergroup model in Foreman does not properly validate role assignments against the calling user's permissions. This allows an authenticated user with usergroup management permissions to attach arbitrary role

How urgent is CVE-2026-5136?

Priority 47/100. High severity; On your watchlist

Related CVEs

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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
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References

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