Vulnerability from bitnami_vulndb
Published
2026-07-27 05:48
Modified
2026-07-27 06:08
Summary
OpenBao: Timing Side-Channel in Userpass Auth Method
Details

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, when 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. This issue was fixed in version 2.3.2. To work around this issue, users 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/.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "openbao",
        "purl": "pkg:bitnami/openbao"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20250806193356-4d9b5d3d6486"
            },
            {
              "introduced": "0.0.1"
            },
            {
              "fixed": "2.3.2"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-54999"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:openbao:openbao:*:*:*:*:*:go:*:*"
    ],
    "severity": "Low"
  },
  "details": "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, when using OpenBao\u0027s 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. This issue was fixed in version 2.3.2. To work around this issue, users 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/.",
  "id": "BIT-openbao-2025-54999",
  "modified": "2026-07-27T06:08:49.409Z",
  "published": "2026-07-27T05:48:54.126Z",
  "references": [
    {
      "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": "WEB",
      "url": "https://github.com/openbao/openbao/commit/4d9b5d3d6486ab9fbd5b644173fa0097015d6626"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openbao/openbao/security/advisories/GHSA-hh28-h22f-8357"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-54999"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "OpenBao: Timing Side-Channel in Userpass Auth Method"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Detection rules are retrieved from Rulezet.