CVE-2021-36780

Unauthorized data access from replicas through vulnerable instance manager pods

HIGH

8.1

CVSS Score

Published: December 17, 2021 at 08:55 AM UTC

Updated: June 17, 2026 at 03:59 AM UTC

1 product affected across 1 vendorLonghorn

Using Longhorn by SUSE?

Get instant alerts when new vulnerabilities affect Longhorn - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH8.1

Exploit prediction

EPSS 0.5%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Longhorn · Linuxfoundation

95%

v < 1.1.31.2.0 ≤ v < 1.2.3longhorn ≤ v < 1.1.3longhorn ≤ v < 1.2.3v

Affected range stops below 1.1.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.2.3, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.2.3v, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

https://bugzilla.suse.com/show_bug.cgi?id=1191819

References (2)

Issue TrackingVendor Advisory

Source: [email protected]

https://bugzilla.suse.com/show_bug.cgi?id=1191819

Third Party Advisory

Source: [email protected]

https://github.com/longhorn/longhorn/security/advisories/GHSA-g358-m2wp-mhhx

CVSS

8.1HIGHsuse

Attack Vector: ADJACENT_NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: HIGH
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-306

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create account Sign in

Free plan, no card