CVE-2026-94290: SUSE Rancher Fleet clusters reference a kubeconfig secret that the controller uses to install and manage a Fle

This month

CRITICAL 9.1UPGRADE

CVE-2026-94290 is a critical-severity flaw (CVSS 9.1) affecting rancher. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

SUSE Rancher Fleet clusters reference a kubeconfig secret that the controller uses to install and manage a Fleet agent on the target cluster. The controller did not sufficiently restrict which kubeconfig secrets a Fleet Cluster object was allowed to reference. As a result, a Fleet cluster defined in a namespace an ordinary user controls could be associated with administrative credentials for the management cluster itself, causing the controller t

Why this priority

Critical severity

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
EPSS exploit chance	n/a
CISA exploited list	No
Weakness	CWE-250
Published	2026-11-02
Last modified	2026-11-02

Publisher (CNA): suse · Vendor: suse · Source: CVE Program record (NVD analysis pending)

Last updated 2026-11-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-11-02 15:29 UTCPublished CVE record published
2026-11-02 15:30 UTCUpdated Record last modified

suse rancher UPGRADE

Affected: >= 0.16.0 and < 0.16.3 · >= 0.15.0 and < 0.15.8 · >= 0.14.0 and < 0.14.12 · >= 0.13.0 and < 0.13.17

Fixed in: 0.13.17, 0.14.12, 0.15.8, 0.16.3

Safe to downgrade to: a release before 0.13.0

1. Check installed version

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

2. UPGRADE to 0.13.17 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade rancher

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 0.13.0 (Debian / Ubuntu)

apt-cache madison rancher sudo apt install rancher=<VERSION_BEFORE_0.13.0> sudo apt-mark hold rancher

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

dnf --showduplicates list rancher sudo dnf downgrade rancher-<VERSION_BEFORE_0.13.0> sudo dnf versionlock add rancher

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.

Advisories and coverage

Research and news

VulDB Recent Entries: CVE-2026-94290 | SUSE Rancher up to 0.13.16/0.14.11/0.15.7/0.16.2 Fleet privileges management 2026-11-02

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-2026-94290?

rancher: upgrade to 0.13.17, 0.14.12, 0.15.8, 0.16.3. Exact commands for each OS are on this page.

Is CVE-2026-94290 being exploited?

CVE-2026-94290 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-2026-94290 affect?

CVE-2026-94290 affects rancher. Severity is critical (CVSS 9.1). SUSE Rancher Fleet clusters reference a kubeconfig secret that the controller uses to install and manage a Fleet agent on the target cluster. The controller did not sufficiently restrict which kubeconfig secrets a Fleet Cluster object was a

How urgent is CVE-2026-94290?

Priority 32/100. Critical severity

Software pages

Rancher vulnerabilities

Related CVEs

CVE-2026-41053 HIGH 8.8 UPGRADE Incorrect authentication caching in the team member ship expansion of the Rancher Github authentication provid
CVE-2026-41052 HIGH 8.8 UPGRADE Improper privilege handling could be used by users with Project Owner role to escalate privileges, in Rancher
CVE-2023-22648 HIGH 8.0 UPGRADE A Improper Privilege Management vulnerability in SUSE Rancher causes permission changes in Azure AD not to be
CVE-2023-22647 CRITICAL 9.9 UPGRADE An Improper Privilege Management vulnerability in SUSE Rancher allowed standard users to leverage their existi
CVE-2022-43760 HIGH 8.4 UPGRADE An Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in SUSE

References

← Back to latest CVEs