{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/l3montree-dev/devguard"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-42300"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-05T20:58:27Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\nThe `SessionMiddleware` accepts a client-supplied `X-Admin-Token` HTTP request header and uses its raw string value as the authenticated `userID` when no Kratos session cookie is present. An unauthenticated attacker who knows or can guess a target user\u0027s Kratos identity UUID can issue requests as that user. Where the target user is an organisation `admin` or `owner`, this gives the attacker full control over that organisation\u0027s DevGuard resources.\n\n### Patches\nThe release v1.2.2 patches this issue. Update your DevGuard API Instances to this version.\n\n### Workarounds\nConfigure a reverse proxy to strip the `X-Admin-Token` header before sending requests to the DevGuard API.\n\n### Resources\nFixed commit: https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a",
  "id": "GHSA-2g9v-7mr5-fgjg",
  "modified": "2026-05-05T20:58:27Z",
  "published": "2026-05-05T20:58:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/l3montree-dev/devguard/security/advisories/GHSA-2g9v-7mr5-fgjg"
    },
    {
      "type": "WEB",
      "url": "https://github.com/l3montree-dev/devguard/commit/6f38310bf93b2a63df3055038f4da82b1f4e6d9a"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/l3montree-dev/devguard"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "DevGuard has an unauthenticated identity assertion via `X-Admin-Token` header"
}