What’s Vulnerable › Vulnerabilities

CVE-2020-35177

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-17 · updated 2026-06-17
• Weakness: CWE-209

Description

HashiCorp Vault and Vault Enterprise 1.4.1 and newer allowed the enumeration of users via the LDAP auth method. Fixed in 1.5.6 and 1.6.1.

Affected products

• HashiCorp Vault: from 1.5.0 before 1.5.6; from 1.6.0 before 1.6.1 — fixed in 1.5.6, 1.6.1

How to fix

Upgrade to a fixed version: HashiCorp Vault 1.5.6, 1.6.1. Check the vendor advisory for mitigations.

References

• https://discuss.hashicorp.com/t/hcsec-2020-25-vault-s-ldap-auth-method-allows-user-enumeration/18984
• https://github.com/hashicorp/vault/blob/master/CHANGELOG.md#161
• https://discuss.hashicorp.com/t/hcsec-2020-25-vault-s-ldap-auth-method-allows-user-enumeration/18984
• https://github.com/hashicorp/vault/blob/master/CHANGELOG.md#161

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