---
title: "CVE-2026-88810: SUSE Rancher - Privilege Escalation"
description: "SUSE Rancher 2.15.2 and SUSE Rancher Webhook 0.11.0 to 0.11.4, 0.12.0 to 0.12.1 contain a privilege escalation caused by lack of validation on inheritedNamespacedRules in GlobalRole, letting non-administrative users gain excessive permissions in downstream clusters via global role binding, exploit requires user to have a global role binding."
url: https://panop.io/threat-heartbeat/CVE-2026-88810/
---

# CVE-2026-88810 SUSE Rancher - Privilege Escalation

SUSE Rancher 2.15.2 and SUSE Rancher Webhook 0.11.0 to 0.11.4, 0.12.0 to 0.12.1 contain a privilege escalation caused by lack of validation on inheritedNamespacedRules in GlobalRole, letting non-administrative users gain excessive permissions in downstream clusters via global role binding, exploit requires user to have a global role binding.

CVSS base score 7.2 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-88810)

## Details

Type

Privilege Escalation

Impact

Privilege Escalation

CVSS vector

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

Published

2 November 2026

Updated

3 November 2026

Weakness

[CWE-306](https://cwe.mitre.org/data/definitions/306.html)

## Vendor fix

Update SUSE Rancher to a version later than 2.15.2 and SUSE Rancher Webhook beyond 0.11.4 and 0.12.1.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-88810](https://nvd.nist.gov/vuln/detail/CVE-2026-88810)
- [https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc](https://github.com/rancher/webhook/security/advisories/GHSA-f898-2c8h-r7jc)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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