{"id":"CVE-2026-63407","summary":"Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses","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 CorsMiddleware returns Access-Control-Allow-Origin: * and permissive OPTIONS responses for authenticated /api/v1 endpoints. JavaScript from any origin can submit an attacker-obtained JWT through the Authorization or X-API-Token header, read the authenticated response, and perform write operations with the token owner's privileges, enabling data exfiltration and account modification. This issue is fixed in version 1.0.0-rc.16.","aliases":["CVE-2026-62387","GHSA-93px-98wh-6fj2"],"modified":"2026-09-11T03:31:02.994027876Z","published":"2026-08-19T15:51:36.784Z","database_specific":{"cwe_ids":["CWE-942"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63407.json","cna_assigner":"GitHub_M"},"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-2026-63407.json"},{"type":"ADVISORY","url":"https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63407"},{"type":"FIX","url":"https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getgrav/grav-plugin-api","events":[{"introduced":"0"},{"fixed":"56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9"},{"fixed":"66d13046175f4d6d7176db1c28a695cf3bd8d864"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.0.0-rc.16"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["1.0.0-rc.15","1.0.0-rc.14","1.0.0-rc.13","1.0.0-rc.12","1.0.0-rc.11","1.0.0-rc.10","1.0.0-rc.9","1.0.0-rc.8","1.0.0-rc.7","1.0.0-rc.6","1.0.0-rc.5","1.0.0-rc.4","1.0.0-rc.3","1.0.0-rc.2","1.0.0-rc.1","1.0.0-beta.17","1.0.0-beta.16","1.0.0-beta.15","1.0.0-beta.14","1.0.0-beta.13","1.0.0-beta.12","1.0.0-beta.11","1.0.0-beta.10","1.0.0-beta.9","1.0.0-beta.8","1.0.0-beta.7","1.0.0-beta.6","1.0.0-beta.5","1.0.0-beta.4","1.0.0-beta.3","1.0.0-beta.2","1.0.0-beta.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63407.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}