None 0.0Published May 14, 2026

CVE-2026-44283etcd: Read access via PrevKv in etcd transactions may bypass RBAC authorization checks

Updated under an hour ago (Oct 27, 2026, 11:40 AM ET)

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It affects etcd-io etcd and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for etcd-io etcd

Exploited in the last 30 days

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.

CVSS: 0.0 NONE (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
Weakness (CWE): CWE-863
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: May 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

etcd-io etcd etcd_io:etcd (from the name)	before 3.4.44; from 3.5.0, <= 3.5.29; from 3.6.0, <= 3.6.10	CNA record
etcd etcd etcd:etcd	before 3.4.44; from 3.5.0 before 3.5.30; from 3.6.0 before 3.6.11	NVD

References

References

https://github.com/etcd-io/etcd/security/advisories/GHSA-x35m-3gp4-4fh5	x-refsource-confirm, mitigation, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.