Missing Authorization Affecting go.etcd.io/etcd/v3/etcdserver package, versions <3.4.42>=3.5.0-alpha.0 <3.5.28>=3.6.0-alpha.0 <3.6.9
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Mar 2026
- disclosed20 Mar 2026
- creditIsaac David, Asim Viladi Oglu Manizada, Alex Schapiro, Ahmed Allam, Luke Francis, Oluwaseun Folly
Introduced: 20 Mar 2026
CVE-2026-33413 Â (opens in a new tab)How to fix?
Upgrade go.etcd.io/etcd/v3/etcdserver to version 3.4.42, 3.5.28, 3.6.9 or higher.
Overview
Affected versions of this package are vulnerable to Missing Authorization in multiple functions in the gRPC API layer, including MemberList() and Compact(). An attacker can gain unauthorized access to sensitive cluster operations and information, such as viewing cluster topology, disrupting operations, interfering with key management, and removing historical data.
Note: Typical Kubernetes deployments, with their own authentication and authorization controls, are not vulnerable.