CVE-2025-55001— OpenBao LDAP MFA Enforcement Bypass When Using Username As Alias
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I. Basic Information for CVE-2025-55001
Vulnerability Information
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Vulnerability Title
OpenBao LDAP MFA Enforcement Bypass When Using Username As Alias
Source: NVD (National Vulnerability Database)
Vulnerability 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 allowed the assignment of policies and MFA attribution based upon entity aliases, chosen by the underlying auth method. When the username_as_alias=true parameter in the LDAP auth method was in use, the caller-supplied username was used verbatim without normalization, allowing an attacker to bypass alias-specific MFA requirements. This issue was fixed in version 2.3.2. To work around this, remove all usage of the username_as_alias=true parameter and update any entity aliases accordingly.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
空格转义处理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenBao 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenBao是OpenBao开源的一个敏感数据管理软件。 OpenBao 2.3.1及之前版本存在安全漏洞，该漏洞源于LDAP认证方法中username_as_alias参数使用不当，可能导致MFA要求被绕过。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-55001
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Same Patch Batch · openbao · 2025-08-09 · 7 CVEs total
| CVE-2025-54997 | 9.1 CRITICAL | OpenBao: Privileged Operator May Execute Code on the Underlying Host |
| CVE-2025-54996 | 7.2 HIGH | OpenBao Root Namespace Operator May Elevate Token Privileges |
| CVE-2025-55000 | 6.5 MEDIUM | OpenBao TOTP Secrets Engine Enables Code Reuse |
| CVE-2025-55003 | 5.7 MEDIUM | OpenBao Login MFA Bypasses Rate Limiting and TOTP Token Reuse |
| CVE-2025-54998 | 5.3 MEDIUM | OpenBao Userpass and LDAP User Lockout Bypass |
| CVE-2025-54999 | 3.7 LOW | OpenBao: Timing Side-Channel in Userpass Auth Method |
IV. Related Vulnerabilities
Same product: openbao
- CVE-2026-40264
OpenBao's Token Store Allows Cross-Namespace Renewal, Revoca - CVE-2026-39396
OpenBao has Decompression Bomb via Unbounded Copy in OCI Plu - CVE-2026-39388
OpenBao's Certificate Authentication Allows Token Renewal Wi - CVE-2026-39946
OpenBao allows SQL Injection in PostgreSQL database secrets - CVE-2026-33758
OpenBao has Reflected XSS in its OIDC authentication error m
Same vendor: openbao
- CVE-2026-40264
OpenBao's Token Store Allows Cross-Namespace Renewal, Revoca - CVE-2026-39396
OpenBao has Decompression Bomb via Unbounded Copy in OCI Plu - CVE-2026-39388
OpenBao's Certificate Authentication Allows Token Renewal Wi - CVE-2026-39946
OpenBao allows SQL Injection in PostgreSQL database secrets - CVE-2026-33758
OpenBao has Reflected XSS in its OIDC authentication error m
V. Comments for CVE-2025-55001
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