CVE-2026-104615

Cluster identity takeover in Fleet cluster registration allows access to another cluster's Fleet namespace

HIGH
7.9
CVSS Score
Published: October 30, 2026 at 03:49 PM UTC
Updated: October 30, 2026 at 05:44 PM UTC
1 product affected across 1 vendorRancher

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Severity
HIGH7.9
Exploit prediction
EPSS 0.2%

Description

A security vulnerability was discovered in SUSE Rancher Fleet's cluster registration flow, in Fleet versions before 0.12, 0.13.0 up to 0.13.17, 0.14.0 up to 0.14.12, 0.15.0 up t o 0.15.17 and 0.16.0 up to 0.16.3. The cluster identity claimed by a registration request was accepted without being bound to the registration token that the request was made with. As a result, a registration request could be associated with a managed cluster that was originally registered with a different registration token.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.9HIGHsuse
Attack Vector
NETWORK
Complexity
HIGH
Privileges
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-290

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