CVE-2021-36780: Linuxfoundation Longhorn

High severity, CVSS 8.1. EPSS: 0.5% chance of exploitation in the next 30 days.

A Missing Authentication for Critical Function vulnerability in longhorn of SUSE Longhorn allows attackers to connect to a longhorn-engine replica instance granting it the ability to read and write data to and from a replica that they should not have access to. This issue affects: SUSE Longhorn longhorn versions prior to 1.1.3; longhorn versions prior to 1.2.3v.

Affected products

• Linuxfoundation Longhorn: before 1.1.3 (fixed in 1.1.3); from 1.2.0, before 1.2.3 (fixed in 1.2.3)

Published 2021-12-17. Last modified 2026-06-17.