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CVE-2022-31247· NVD / CVE Program· CNA suse

Rancher: Downstream cluster privilege escalation through cluster and project role template binding (CRTB/PRTB)

An Improper Authorization vulnerability in SUSE Rancher, allows any user who has permissions to create/edit cluster role template bindings or project role template bindings (such as cluster-owner, manage cluster members, project-owner and manage project members) to gain owner permission in another project in the same cluster or in another project on a different downstream cluster. This issue affects: SUSE Rancher Rancher versions prior to 2.6.7; Rancher versions prior to 2.5.16.

CriticalCVSS 9.1 · v3.1—No exploit Fix available

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Published
Sep 7, 2022
Updated
Jun 17, 2026
EPSS
1.0% · 61th percentile
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Report tools

JSON

Action score

36

Monitor

Low priority for now.

CVSS
36 / 40 · 9.1 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CNA vs NVD score

NVD
9.1
CNA · suse
9.1
agree

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
suserancher

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • suse rancher2.5.0 and later · before 2.5.16
  • suse rancher2.6.0 and later · before 2.6.7

Versions reported by the vendor

Affected version ranges reported by the assigning authority (suse). Independent of NVD's CPE analysis and usually ahead of it.

  • SUSE Rancher

    • Rancher and later · before 2.6.7affected
    • Rancher and later · before 2.5.16affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Gogithub.com/rancher/rancherfrom 2.5.0 · before 2.5.162.5.16
Gogithub.com/rancher/rancherfrom 2.6.0 · before 2.6.72.6.7

Same product

suse: all records

Other highest-scoring records for the same primary product.

  • CVE-2022-43755Rancher: Non-random authentication token
    40Plan
  • CVE-2021-36782Rancher: Plaintext storage and exposure of credentials in Rancher API and cluster.management.cattle.io object
    40Plan
  • CVE-2026-41050Helm impersonation bypass of `RESTClientGetter` retains `cluster-admin` during template rendering
    39Monitor
  • CVE-2025-62878Local Path Provisioner vulnerable to Path Traversal via parameters.pathPattern
    39Monitor
  • CVE-2023-22651Improper Privilege Management vulnerability in SUSE Rancher allows Privilege Escalation.
    39Monitor
  • CVE-2021-36783Rancher: Failure to properly sanitize credentials in cluster template answers
    39Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Go:github.com/rancher/rancher2.5.16Package registry (OSV)
Go:github.com/rancher/rancher2.6.7Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-285 · Improper Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

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