---
title: "CVE-2022-31247: Rancher has downstream cluster privilege escalation through cluster and project role template binding (CRTB/PRTB)"
url: https://erroneo.us/security/cve/CVE-2022-31247/
description: "CVE-2022-31247 (github.com/rancher/rancher (Go)): An Improper Authorization vulnerability in SUSE Rancher, allows any user who has permissions to…"
type: vulnerability-record
section: "Security Digest"
date_published: 2022-09-07
date_modified: 2026-03-03
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2022-31247"
kev: false
cvss: 9.1
epss: 0.00978
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2022-31247: Rancher has downstream cluster privilege escalation through cluster and project role template binding (CRTB/PRTB)

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.0% , percentile 62: FIRST’s model estimates a 1.0% chance of exploitation activity in the next 30 days, higher than 62% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.
- Only applies if your dependency tree includes github.com/rancher/rancher (Go) >= 2.5.0, <= 2.5.15, fixed in 2.5.16 ; github.com/rancher/rancher (Go) >= 2.6.0, <= 2.6.6, fixed in 2.6.7 . Check your lockfile, including transitive dependencies.

## What it is

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.

## Affected packages

- Go `github.com/rancher/rancher` >= 2.5.0, <= 2.5.15 → fixed: 2.5.16
- Go `github.com/rancher/rancher` >= 2.6.0, <= 2.6.6 → fixed: 2.6.7

## Affected products (CVE record)

- SUSE Rancher: Rancher < 2.6.7
- SUSE Rancher: Rancher < 2.5.16

## Severity

- suse CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.1 `CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- FIRST EPSS (model of 2026-10-21): 0.98% probability of exploitation activity in the next 30 days; percentile 62.

## Sources

- [GitHub Advisory GHSA-6x34-89p7-95wg](https://github.com/advisories/GHSA-6x34-89p7-95wg)
- [CVE.org record CVE-2022-31247](https://www.cve.org/CVERecord?id=CVE-2022-31247)
- [NVD entry CVE-2022-31247](https://nvd.nist.gov/vuln/detail/CVE-2022-31247)
- [bugzilla.suse.com](https://bugzilla.suse.com/show_bug.cgi?id=1199730)
- [github.com](https://github.com/rancher/rancher/security/advisories/GHSA-6x34-89p7-95wg)

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Source page: https://erroneo.us/security/cve/CVE-2022-31247/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt