What’s Vulnerable › Vulnerabilities

CVE-2021-27668

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-31 · updated 2026-06-17
• Weakness: CWE-306

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.

Affected products

• HashiCorp Vault: from 0.9.2 before 1.6.3 — fixed in 1.6.3

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.6.3. Check the vendor advisory for mitigations.

References

• https://discuss.hashicorp.com/t/hcsec-2021-05-vault-enterprise-s-dr-secondaries-exposed-license-metadata-without-authentication/21427
• https://security.gentoo.org/glsa/202207-01
• https://discuss.hashicorp.com/t/hcsec-2021-05-vault-enterprise-s-dr-secondaries-exposed-license-metadata-without-authentication/21427
• https://security.gentoo.org/glsa/202207-01

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