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.

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Vendors Products
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-x35m-3gp4-4fh5 etcd RBAC bypass allows unauthorized data access via PrevKv/lease attachment in nested transaction Put requests
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 16 May 2026 02:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 15 May 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Etcd
Etcd etcd
CPEs cpe:2.3:a:etcd:etcd:*:*:*:*:*:*:*:*
Vendors & Products Etcd
Etcd etcd

Thu, 14 May 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 0, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-16T00:40:51.007Z

Reserved: 2026-05-05T17:39:31.112Z

Link: CVE-2026-44283

cve-icon Vulnrichment

Updated: 2026-05-16T00:40:45.568Z

cve-icon NVD

Status : Analyzed

Published: 2026-05-14T18:16:49.650

Modified: 2026-05-15T18:24:59.527

Link: CVE-2026-44283

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-17T19:30:08Z

Weaknesses