CVE-2021-27668 Missing authorization in n/a

What is CVE-2021-27668?

CVE-2021-27668 is a medium-severity missing authorization vulnerability in Hashicorp Vault, published on 31 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HashiCorp Vault Enterprise 0.9.2 through 1.6.2 allowed the read of license metadata from DR secondaries without authentication. Fixed in 1.6.3.

Weakness: CWE-306

Which versions are affected by CVE-2021-27668?

1 open source package ship an affected version, including vault. It affects 1 product.

Products include Hashicorp Vault.

How do I fix CVE-2021-27668?

Upgrade vault to 1.6.3 or later.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-27668 being exploited?

There is no known exploitation of CVE-2021-27668 in the wild and no public exploit code.

Other vulnerabilities in Hashicorp Vault

• CVE-2020-35192 Hardcoded credentials in n/a Critical 9.8
• CVE-2020-12757 Improper Input Validation in HashiCorp Vault Critical 9.8
• CVE-2025-6000 Arbitrary Remote Code Execution via Plugin Catalog Abuse Critical 9.1
• CVE-2022-40186 HashiCorp Vault vulnerable to incorrect metadata access Critical 9.1
• CVE-2022-36129 Missing authorization in n/a Critical 9.1

All Hashicorp Vault vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-vault-2021-27668, GHSA-mfpx-cx7p-6jc6.