CVE-2026-44283— etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
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I. Basic Information for CVE-2026-44283
Vulnerability Information
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Vulnerability Title
etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-44283
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|---|
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- https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2026-44283
IV. Related Vulnerabilities
Same product: etcd
Same vendor: etcd-io
Same weakness: CWE-863
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