CVE-2026-44283
Unknown
Description
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.
SeverityUnknown
CVSS0.0
Exploit probability—
ProductEtcd
PublishedMay 14, 2026
First seenMay 14, 2026
Weakness typeCWE-863Incorrect authorization
How to fix
Update
- etcd etcd3.4.44, 3.5.30, 3.6.11 or later
- go.etcd.io/etcd/v33.6.11, 3.5.30 or later
- go.etcd.io/etcd3.4.44 or later
- go.etcd.io/etcd/server/v33.5.30, 3.6.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| etcd etcd | v < 3.4.44, 3.5.0 ≤ v < 3.5.30, 3.6.0 ≤ v < 3.6.11 | 3.4.44, 3.5.30, 3.6.11 |
| go.etcd.io/etcd/v3Go | 3.6.0 ≤ v < 3.6.11, 3.5.0 ≤ v < 3.5.30 | 3.6.11, 3.5.30 |
| go.etcd.io/etcdGo | v < 3.4.44 | 3.4.44 |
| go.etcd.io/etcd/server/v3Go | 3.5.0 ≤ v < 3.5.30, 3.6.0 ≤ v < 3.6.11 | 3.5.30, 3.6.11 |
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