{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "edumfa"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.9.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [],
  "database_specific": {
    "cwe_ids": [
      "CWE-287",
      "CWE-613"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-18T15:37:00Z",
    "nvd_published_at": null,
    "severity": "HIGH"
  },
  "details": "### Impact\nIn eduMFA \u003c 2.9.1 userless Passkey/WebAuthn challenges might be replayed and do not expire\n\n### Patches\nFixed in eduMFA \u003e= 2.9.1 by adding validity information to the userless challenges.\n\n### Workarounds\nNo known workarounds besides disabling userless login altogether.",
  "id": "GHSA-j5rm-v3vh-vx94",
  "modified": "2026-05-18T15:37:00Z",
  "published": "2026-05-18T15:37:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/eduMFA/eduMFA/security/advisories/GHSA-j5rm-v3vh-vx94"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/eduMFA/eduMFA"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "eduMFA Passkeys: missing expiration flag may allow replay attacks and reuse of old challenges "
}