{"schema_version":"1.7.3","id":"GHSA-hh28-h22f-8357","published":"2025-08-08T14:41:14Z","modified":"2026-07-27T09:11:30.793253592Z","aliases":["BIT-openbao-2025-54999","CVE-2025-54999","GO-2025-3854"],"summary":"OpenBao has a Timing Side-Channel in the Userpass Auth Method","details":"### Impact\n\nWhen using OpenBao's `userpass` auth method, user enumeration was possible due to timing difference between non-existent users and users with stored credentials. This is independent of whether the supplied credentials were valid for the given user. \n\n### Patches\n\nOpenBao v2.3.2 will patch this issue.\n\n### Workarounds\n\nUsers may use another auth method or apply rate limiting quotas to limit the number of requests in a period of time: https://openbao.org/api-docs/system/rate-limit-quotas/\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-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034\n- https://nvd.nist.gov/vuln/detail/CVE-2025-6011\n\nBarring further information, this is also assumed to cover and remediate the following additional vulnerability:\n\n- https://discuss.hashicorp.com/t/hcsec-2025-21-vault-user-enumeration-in-userpass-auth-method/76095\n- https://nvd.nist.gov/vuln/detail/CVE-2025-6010\n\nIf this is not the case as further details emerge, a new CVE will be assigned for remediating that. Otherwise, no further CVE will be sought.","affected":[{"package":{"name":"github.com/openbao/openbao","ecosystem":"Go","purl":"pkg:golang/github.com/openbao/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0.1.0"},{"fixed":"2.3.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-hh28-h22f-8357/GHSA-hh28-h22f-8357.json"}},{"package":{"name":"github.com/openbao/openbao","ecosystem":"Go","purl":"pkg:golang/github.com/openbao/openbao"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.0.0-20250806193356-4d9b5d3d6486"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-hh28-h22f-8357/GHSA-hh28-h22f-8357.json"}}],"references":[{"type":"WEB","url":"https://github.com/openbao/openbao/security/advisories/GHSA-hh28-h22f-8357"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-54999"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-6011"},{"type":"WEB","url":"https://github.com/openbao/openbao/commit/4d9b5d3d6486ab9fbd5b644173fa0097015d6626"},{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2025-15-timing-side-channel-in-vault-s-userpass-auth-method/76034"},{"type":"WEB","url":"https://discuss.hashicorp.com/t/hcsec-2025-21-vault-user-enumeration-in-userpass-auth-method/76095"},{"type":"PACKAGE","url":"https://github.com/openbao/openbao"}],"database_specific":{"cwe_ids":["CWE-203"],"github_reviewed":true,"github_reviewed_at":"2025-08-08T14:41:14Z","nvd_published_at":"2025-08-09T03:15:46Z","severity":"LOW"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}