CVE-2026-44283
etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
etcd is a distributed key-value store for the data of a distributed system. Prior to 3.4.44, 3.5.30, and 3.6.11, a vulnerability in etcd allows read access via PrevKv, or lease attachment in Put requests within transaction operations, to bypass RBAC authorization checks. An authenticated user without sufficient read or lease-related permissions may be able to access unauthorized data or attach leases by invoking transaction operations with these features enabled. This vulnerability is fixed in 3.4.44, 3.5.30, and 3.6.11.
| CWE | CWE-863 |
| Vendor | etcd-io |
| Product | etcd |
| Published | May 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
None
Affected Versions
etcd-io / etcd
< 3.4.44 >= 3.5.0, <= 3.5.29 >= 3.6.0, <= 3.6.10