{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.0.0-rc.16"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9"
            },
            {
              "fixed": "66d13046175f4d6d7176db1c28a695cf3bd8d864"
            }
          ],
          "repo": "https://github.com/getgrav/grav-plugin-api",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4hpj-wmpw-ghwq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-598"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63408.json"
  },
  "details": "Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content.  Prior to 1.0.0-rc.16, the Grav API plugin JwtAuthenticator::extractBearerToken() accepts a JWT from the token URL query parameter on every /api/v1 route, including state-changing endpoints. Request URLs consequently expose valid access tokens through Apache, proxy, and CDN logs, browser history, and Referer headers, allowing a party with access to those records to reuse the token with the owner's API privileges. This issue is fixed in version 1.0.0-rc.16.",
  "id": "CVE-2026-63408",
  "modified": "2026-09-11T03:30:18.687369105Z",
  "published": "2026-08-19T15:53:08.681Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.0-rc.16"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63408.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getgrav/grav/security/advisories/GHSA-4hpj-wmpw-ghwq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63408"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Grav API Plugin: JWT Access Token Accepted via `?token=` URL Query Parameter"
}