CVE-2021-31999

—

CVSS 3.1

8.8 high

EPSS

1%p62

Published

Jul 15, 2021 (Jul 15, 2021)

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.

Vendors: rancher
Products: rancher
Weakness: CWE-807
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (1.1%)

In the news0 stories

No ingested article mentions this CVE yet.