OpenBao Userpass and LDAP User Lockout Bypass
### Impact Attackers could bypass the automatic user lockout mechanisms in the OpenBao Userpass or LDAP auth systems. This was caused by different aliasing between pre-flight and full login request user entity alias attributions. ### Patches OpenBao v2.3.2 will patch this issue. ### Workarounds Existing users may apply rate-limiting quotas on the authentication endpoints: https://openbao.org/api-docs/system/rate-limit-quotas/ ### References This issue was disclosed to HashiCorp and is the OpenBao equivalent of the following tickets: - https://discuss.hashicorp.com/t/hcsec-2025-16-vault-userpass-and-ldap-user-lockout-bypass/76035 - https://nvd.nist.gov/vuln/detail/CVE-2025-6004
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2025-54998US | — | — | ||
OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 0.1.0 through 2.3.1, attackers… | ||||
references
External citations — patches, advisories, analysis.
- https://discuss.hashicorp.com/t/hcsec-2025-16-vault-userpass-and-ldap-user-lockout-bypass/76035WEB
- https://github.com/openbao/openbaoPACKAGE
- https://github.com/openbao/openbao/commit/c52795c1ef746c7f2c510f9225aa8ccbbd44f9fcWEB
- https://github.com/openbao/openbao/security/advisories/GHSA-j3xv-7fxp-gfhxWEB
- https://nvd.nist.gov/vuln/detail/CVE-2025-54998ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2025-6004ADVISORY
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