CVE-2025-55001: Github.com/openbao/openbao Remote Code Execution Vulnerability
MODERATECVE-2025-55001 is a MODERATE (CVSS 6.5) remote code execution vulnerability (CWE-156: Improper Neutralization of Whitespace) affecting Github.com/openbao/openbao libraries in the Go ecosystem. The issue involves openbao ldap mfa enforcement bypass when using username as alias. Remediation is available by upgrading affected packages to version 2.3.2, 0.0.0-20250807212521-c52795c1ef74.
CVE-2025-55001 at a Glance
Security Impact
CVSS: 6.5
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N).
How to Fix CVE-2025-55001
To remediate this vulnerability, upgrade all affected Github.com/openbao/openbao dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/openbao/openbao to 2.3.2Upgrade github.com/openbao/openbao to 0.0.0-20250807212521-c52795c1ef74Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/openbao/openbaoHow to Check if You Are Affected
To determine whether your application is affected by CVE-2025-55001, inspect your project dependencies for Github.com/openbao/openbao:
inspect dependencies for github.com/openbao/openbaoAnalyze the terminal output to locate any version of Github.com/openbao/openbao in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.2), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-156: Improper Neutralization of Whitespace, where the product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as whitespace when they are sent to a downstream component. In Github.com/openbao/openbao, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2025-55001 Affected Github.com/openbao/openbao Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/openbao/openbao
|
Go |
≥ 0.1.0
< 2.3.2
|
2.3.2
|
|
github.com/openbao/openbao
|
Go |
< 0.0.0-20250807212521-c52795c1ef74
|
0.0.0-20250807212521-c52795c1ef74
|
References
Frequently Asked Questions
What is CVE-2025-55001?
Which Github.com/openbao/openbao versions are affected?
What version fixes CVE-2025-55001?
Is github.com/openbao/openbao affected?
What is the CVSS score of CVE-2025-55001?
What CWE is associated with CVE-2025-55001?
How can I check Go dependencies for CVE-2025-55001?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-2q8q-8fgw-9p6p",
"modified" : "2025-08-11T13:56:49Z",
"published" : "2025-08-08T15:17:09Z",
"aliases" : [ "CVE-2025-55001" ],
"summary" : "OpenBao LDAP MFA Enforcement Bypass When Using Username As Alias",
"details" : "### Impact\n\nOpenBao allows assignment of policies and MFA attribution based upon entity aliases, chosen by the underlying auth method. When using the `username_as_alias=true` parameter in the LDAP auth method, the caller-supplied username is used verbatim without normalization, allowing an attacker to bypass alias-specific MFA requirements.\n\n### Patches\n\nOpenBao v2.3.2 will patch this issue.\n\n### Workarounds\n\nLDAP methods are only vulnerable if using `username_as_alias=true`. Remove all usage of this parameter and update any entity aliases accordingly.\n\n### References\n\nThis issue was disclosed to HashiCorp and is the OpenBao equivalent of the following tickets:\n\n- https://discuss.hashicorp.com/t/hcsec-2025-20-vault-ldap-mfa-enforcement-bypass-when-using-username-as-alias/76092\n- https://nvd.nist.gov/vuln/detail/CVE-2025-6013",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/openbao/openbao"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0.1.0"
}, {
"fixed" : "2.3.2"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/openbao/openbao"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "0.0.0-20250807212521-c52795c1ef74"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/openbao/openbao/security/advisories/GHSA-2q8q-8fgw-9p6p"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-55001"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-6013"
}, {
"type" : "WEB",
"url" : "https://github.com/openbao/openbao/commit/c52795c1ef746c7f2c510f9225aa8ccbbd44f9fc"
}, {
"type" : "WEB",
"url" : "https://discuss.hashicorp.com/t/hcsec-2025-20-vault-ldap-mfa-enforcement-bypass-when-using-username-as-alias/76092"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/openbao/openbao"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-156" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2025-08-08T15:17:09Z",
"nvd_published_at" : "2025-08-09T03:15:46Z"
}
}