Homer: Hardcoded Default Admin Password 'sipcapture' With No Forced Change on First Login

{
  "id": "9ca3eb202a8e18a9ab89606fa746b603dc713fb11fffb424b6f50a6cb86ab46c",
  "url": "https://osv.dev/vulnerability/GHSA-6xp5-7rcx-xfgx",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Homer: Hardcoded Default Admin Password 'sipcapture' With No Forced Change on First Login",
    "summary": "### Summary On every fresh Homer deployment using internal authentication, the bootstrap process automatically creates an `admin` account with the password `sipcapture` (stored as a legacy SHA-256 hex hash). There is no first-login forced-change mechanism. Any attacker who reaches the login endpoint immediately gains full administrative access. ### Details **`config/config.go` lines 858-861:** ```go // DefaultInternalAuthPasswordHash is the SHA-256 hex digest of the default // bootstrap password (cleartext: sipcapture). const DefaultInternalAuthPasswordHash = \"883ffc1f37fd0fe542b0fb9740035c4383e7d976c411161d24e62edace280f90\" ``` **`coordinator/services/auth_bootstrap.go` lines 20-71:** `EnsureBootstrapAdminUser()` runs at startup. If no admin user exists, it inserts a row with `username=admin`, `password_hash=DefaultInternalAuthPasswordHash`. No `force_change`, no `first_login` flag, no expiry is set. **`coordinator/services/auth_bootstrap_test.go` line 114** confirms the plaintext: ```go u, err := svc.Authenticate(ctx, \"admin\", \"sipcapture\") ``` **`passwordhash/password.go` lines 36-45:** Legacy SHA-256 hex hashes are accepted via `legacySHA256HexEqual`, so the default credential is functional on any deployment. ### PoC ```bash # Authenticate with default credentials — works on any fresh Homer deployment curl -s -X POST http:///api/v3/auth \\ -H 'Content-Type: application/json' \\ -d '{\"username\":\"admin\",\"password\":\"sipcapture\"}' # Response: {\"token\":\"\",\"data\":{\"userGroup\":\"ad",
    "evidence": "osv:GHSA-6xp5-7rcx-xfgx",
    "products": [
      {
        "name": {
          "value": "github.com/sipcapture/homer-app",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.0.0-20260625091610-b2e942031ff8",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "GHSA-6xp5-7rcx-xfgx",
      "aliases": [
        "CVE-2026-62252",
        "GHSA-6xp5-7rcx-xfgx",
        "GO-2026-6671"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.0.0-20260625091610-b2e942031ff8"
                }
              ]
            }
          ],
          "package": {
            "name": "github.com/sipcapture/homer-app",
            "purl": "pkg:golang/github.com/sipcapture/homer-app",
            "ecosystem": "Go"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-6xp5-7rcx-xfgx/GHSA-6xp5-7rcx-xfgx.json"
          }
        }
      ],
      "modified": "2026-10-20T00:55:38.909531918Z",
      "provider": "osv",
      "references": [
        "https://github.com/sipcapture/homer/security/advisories/GHSA-6xp5-7rcx-xfgx",
        "https://github.com/sipcapture/homer/pull/838",
        "https://github.com/sipcapture/homer/commit/b2e942031ff8cd7435a244ebef306ee97d16b809",
        "https://github.com/sipcapture/homer",
        "https://github.com/sipcapture/homer/releases/tag/11.0.283"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-798"
        ],
        "severity": "CRITICAL",
        "github_reviewed": true,
        "nvd_published_at": null,
        "github_reviewed_at": "2026-10-07T16:12:02Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-62252",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 376880,
  "published_at": "2026-10-07T16:12:02+00:00"
}