Improper access control in etcd - #VU130109
Published: May 5, 2026
Vulnerability identifier: #VU130109
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: etcd-io
Affected software:
etcd
etcd
Detailed vulnerability description
The vulnerability allows a remote attacker to access unauthorized data.
The vulnerability exists due to improper access control in transaction operations when processing Put requests with PrevKv enabled. A remote attacker can send a specially crafted transaction request to access unauthorized data.
Kubernetes deployments that rely on the API server for authentication and authorization are not affected.
Remediation
Install security update from vendor's website.