CVE-2018-1099
etcd: DNS rebinding vulnerability in etcd server
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · March 7, 2018
Updated · November 22, 2025
Description
It has been discovered that etcd does not correctly restrict access to resources based on hostname. A remote attacker could perform a DNS-rebinding attack and trick the browser into sending requests to an etcd server on an internal network, bypassing the Same-Origin Policy.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
Configure and enable authentication on the etcd server or secure your client connection via HTTPS.
CVSS / CWE
CVSS 3.0 · 5CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L
CWE-284 · Improper Access Control