CVE-2021-31999

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher versions prior to 2.5.9. Rancher versions prior to 2.4.16.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-807

Affected software

No affected versions have been published.

Timeline

Published: Jul 15, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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