CVE-2026-44283

NONE

etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 0.0
EPSS 0.0022
EPSS Percentile 12.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (7)
etcd/etcd < 3.4.44
etcd/v3 3.5.0 - 3.5.30Go
etcd/v3 3.6.0 - 3.6.11Go
etcd-io/etcd < 3.4.44
etcd-io/etcd >= 3.5.0, <= 3.5.29
etcd-io/etcd >= 3.6.0, <= 3.6.10
go.etcd.io/etcd 0 - 3.4.44Go
Published May 14, 2026
Tracked Since May 14, 2026