CVE-2026-5135: A flaw was found in Foreman

Routine

MEDIUM 6.5WATCHLISTUPGRADEUPGRADE

CVE-2026-5135 is a medium-severity flaw (CVSS 6.5) 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. This broken access control vulnerability allows an authenticated user with host-edit permissions to retarget an existing lookup value override to a different host. This is achieved by modifying the match field through nested host attributes, effectively bypassing authorisation checks. The consequence is the potential for unauthorised modification of managed host configurations across different organisational and locat

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-639
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 15:17 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-2026-5135?

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-2026-5135 being exploited?

CVE-2026-5135 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-2026-5135 affect?

CVE-2026-5135 affects satellite, foreman. Severity is medium (CVSS 6.5). A flaw was found in Foreman. This broken access control vulnerability allows an authenticated user with host-edit permissions to retarget an existing lookup value override to a different host. This is achieved by modifying the match field t

How urgent is CVE-2026-5135?

Priority 37/100. On your watchlist

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CVE-2026-96658 HIGH 8.8 UPGRADE UPGRADE A flaw was found in Foreman
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References

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