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CVE-2026-1046157.9High

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

SUSE · Rancher

Not in CISA KEVFixed in version 0.12
0.2%probability of exploitation in the next 30 days
12th percentile
050100

Higher than 12% of scored CVEs

7.9HighCVSS
LowHigh

DescriptionNVD

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.

Coverage1 article · 1 outlet

First in our coverage: SecurityOnline, 4 Nov.

  1. SUSE patches critical Rancher Fleet flaw enabling cluster takeover
    SecurityOnline · first in our coverage · mentions it in passing

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References

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