Improper access control in HashiCorp Consul Enterprise

Published: 2021-12-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-41805
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Server applications / Other server solutions

Vendor HashiCorp

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper access control

EUVDB-ID: #VU59041

Risk: Medium


CVE-ID: CVE-2021-41805

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No


The vulnerability allows a remote user to gain unauthorized access to sensitive information.

The vulnerability exists due to improper access restrictions. An ACL token (with the default operator:write permissions) in one namespace can be used for unintended privilege escalation in a different namespace. A remote user can send a specially crafted request and gain unauthorized access to the affected application.


Install update from vendor's website.

Vulnerable software versions

Consul: 1.8.0 - 1.8.16, 1.9.0 - 1.9.10, 1.10.0 - 1.10.3

CPE2.3 External links

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?