CVE-2026-104615
Cluster identity takeover in Fleet cluster registration allows access to another cluster's Fleet namespace
- Published
- Oct 30, 2026
- Updated
- Oct 30, 2026
- Assigning CNA
- suse
- Evidence observed
- Oct 30, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:HLow · next 30 days
- Percentile
- 12.7%
- Model date
- Oct 31, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
PoCs & write-ups for CVEs I reported (coordinated disclosure; published + patched only)
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