{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "stigmem-node"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.9.0a2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-295",
      "CWE-345"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-29T22:18:19Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nFederation peer registration accepted peer key material during registration without a separate administrator approval step based on an out-of-band fingerprint check. Impacted deployments are nodes that accept federation peer registration across a network where initial registration could be intercepted or misdirected.\n\n### Patches\nPatched in 0.9.0a2. Peer registration now uses a pending approval flow, and peer tokens are not accepted until an administrator approves the peer using the expected fingerprint.\n\n### Workarounds\nBefore upgrading, restrict peer registration endpoints to trusted administrative networks and verify peer public-key fingerprints out of band before allowing federation traffic.\n\n### Upgrade\nUpgrade to the patched release:\n\n```bash\npip install --upgrade --pre stigmem-node\n```\n\nIf developers install through the Stigmem meta-package instead, they should use the matching extra for deployments, for example:\n\n```bash\npip install --upgrade --pre \u0027stigmem[node]\u0027\n```\n\n### Resources\n- Release: https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2\n- Changelog: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35\n- Security policy and posture: https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md",
  "id": "GHSA-9vp8-3hmv-8fgh",
  "modified": "2026-05-29T22:18:19Z",
  "published": "2026-05-29T22:18:19Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/eidetic-labs/stigmem/security/advisories/GHSA-9vp8-3hmv-8fgh"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/eidetic-labs/stigmem"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/CHANGELOG.md#L14-L35"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eidetic-labs/stigmem/blob/v0.9.0a2/SECURITY.md"
    },
    {
      "type": "WEB",
      "url": "https://github.com/eidetic-labs/stigmem/releases/tag/v0.9.0a2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "stigmem-node\u0027s federation peer registration lacked explicit out-of-band approval"
}