CVE-2023-3462 Vault's LDAP Auth Method Allows for User Enumeration

What is CVE-2023-3462?

CVE-2023-3462 is a medium-severity vulnerability in Hashicorp Vault, published on 31 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

HashiCorp's Vault and Vault Enterprise are vulnerable to user enumeration when using the LDAP auth method. An attacker may submit requests of existent and non-existent LDAP users and observe the response from Vault to check if the account is valid on the LDAP server. This vulnerability is fixed in Vault 1.14.1 and 1.13.5.

Weakness: CWE-203

Which versions are affected by CVE-2023-3462?

6 open source packages ship an affected version, including github.com/hashicorp/vault and vault. It affects 1 product.

Products include Hashicorp Vault.

How do I fix CVE-2023-3462?

Upgrade github.com/hashicorp/vault to a fixed version for your release line: 1.13.5 or 1.14.1.

Is CVE-2023-3462 being exploited?

There is no known exploitation of CVE-2023-3462 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-2023-3462, GHSA-9v3w-w2jh-4hff, GO-2023-1986.