OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 2.3.1 and below, OpenBao's Login Multi-Factor Authentication (MFA) system allows enforcing MFA using Time-based One Time Password (TOTP). Due to normalization applied by the underlying TOTP library, codes were accepted which could contain whitespace; this whitespace could bypass internal rate limiting of the MFA method and allow reuse of existing MFA codes. This issue was fixed in version 2.3.2. To work around this, use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/.
History

Tue, 12 Aug 2025 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Openbao
Openbao openbao
CPEs cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*
Vendors & Products Openbao
Openbao openbao

Tue, 12 Aug 2025 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Openbao Project
Openbao Project openbao
Vendors & Products Openbao Project
Openbao Project openbao

Mon, 11 Aug 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 09 Aug 2025 02:30:00 +0000

Type Values Removed Values Added
Description OpenBao exists to provide a software solution to manage, store, and distribute sensitive data including secrets, certificates, and keys. In versions 2.3.1 and below, OpenBao's Login Multi-Factor Authentication (MFA) system allows enforcing MFA using Time-based One Time Password (TOTP). Due to normalization applied by the underlying TOTP library, codes were accepted which could contain whitespace; this whitespace could bypass internal rate limiting of the MFA method and allow reuse of existing MFA codes. This issue was fixed in version 2.3.2. To work around this, use of rate-limiting quotas can limit an attacker's ability to exploit this: https://openbao.org/api-docs/system/rate-limit-quotas/.
Title OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse
Weaknesses CWE-307
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-08-09T02:01:43.985Z

Updated: 2025-08-11T14:47:04.206Z

Reserved: 2025-08-04T17:34:24.421Z

Link: CVE-2025-55003

cve-icon Vulnrichment

Updated: 2025-08-11T14:46:55.336Z

cve-icon NVD

Status : Analyzed

Published: 2025-08-09T03:15:47.030

Modified: 2025-08-12T20:39:40.253

Link: CVE-2025-55003

cve-icon Redhat

No data.