{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "fd83bf0b37a756363f718e134c16e448da09a74d"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              },
              {
                "original_tag": "v3.4.0",
                "range": [
                  {
                    "fixed": "37969d2898ea7b2de14863b1495e76b079eea4bb"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "fd83bf0b37a756363f718e134c16e448da09a74d"
            },
            {
              "fixed": "37969d2898ea7b2de14863b1495e76b079eea4bb"
            }
          ],
          "repo": "https://github.com/nauelg/astro-blocks",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-mfcg-m7j5-7v72"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-321",
      "CWE-798"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64682.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "3.4.0"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "fixed": "3.4.0"
              },
              {
                "fixed": "3.4.0"
              }
            ],
            "source": "DESCRIPTION"
          }
        ]
      }
    ]
  },
  "details": "AstroBlocks is a block-first CMS for Astro projects. Prior to version 3.4.0, admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name. An attacker who knows the public fallback value (readable in the published package) can forge a valid session token with role: \"owner\" and obtain full administrative control of the CMS — creating/deleting content, users, media, redirects, and configuration. This issue has been patched in version 3.4.0.",
  "id": "CVE-2026-64682",
  "modified": "2026-11-12T10:30:24.844743312Z",
  "published": "2026-11-11T04:04:09.388Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/NauelG/astro-blocks/releases/tag/v3.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64682.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/NauelG/astro-blocks/security/advisories/GHSA-mfcg-m7j5-7v72"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64682"
    },
    {
      "type": "FIX",
      "url": "https://github.com/NauelG/astro-blocks/commit/fd83bf0b37a756363f718e134c16e448da09a74d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/NauelG/astro-blocks/pull/51"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "AstroBlocks: Admin session tokens can be forged due to a hard-coded fallback JWT secret and a mismatched environment variable name"
}