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CVE-2025-54998

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Date: August 8, 2025

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 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. This is fixed in version 2.3.2. To work around this issue, existing users may apply rate-limiting quotas on the authentication endpoints:, see https://openbao.org/api-docs/system/rate-limit-quotas/.

Severity Score

Related Resources (7)

https://github.com/openbao/openbao
https://nvd.nist.gov/vuln/detail/CVE-2025-6004
https://github.com/openbao/openbao/commit/c52795c1ef746c7f2c510f9225aa8ccbbd44f9fc
https://github.com/openbao/openbao/security/advisories/GHSA-j3xv-7fxp-gfhx
https://nvd.nist.gov/vuln/detail/CVE-2025-54998
https://discuss.hashicorp.com/t/hcsec-2025-16-vault-userpass-and-ldap-user-lockout-bypass/76035
https://www.mend.io/vulnerability-database/CVE-2025-54998

Severity Score

Weakness Type (CWE)

Improper Restriction of Excessive Authentication Attempts

CWE-307

Top Fix

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Upgrade Version

Upgrade to version github.com/openbao/openbao - v2.3.2;github.com/openbao/openbao - v0.0.0-20250807212521-c52795c1ef74

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): CHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): HIGH

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