{"id":"CVE-2026-62387","summary":"Grav \u003c 1.0.0-rc.16 CORS Misconfiguration via API Plugin","details":"The Grav API plugin (getgrav/grav-plugin-api) before 1.0.0-rc.16 shipped Access-Control-Allow-Origin: * as its default CORS configuration on all responses, including authenticated endpoints and preflight (OPTIONS) responses. Because the plugin accepts credentials via the Authorization and X-API-Token headers (set programmatically by JavaScript rather than via cookies), an attacker who obtains a valid access token (e.g., via log leakage, Referer headers, browser history, or network capture) can issue fully authenticated cross-origin requests from any malicious website to read sensitive data and perform write operations as the token's user. Fixed in 1.0.0-rc.16.","aliases":["CVE-2026-63407","GHSA-93px-98wh-6fj2"],"modified":"2026-08-20T04:03:54.857264068Z","published":"2026-07-17T00:07:14.426Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-942"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62387.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"1.0.0-rc.16"}]}]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/62xxx/CVE-2026-62387.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-2026-62387"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/grav-rc-16-cors-misconfiguration-via-api-plugin"},{"type":"PACKAGE","url":"https://github.com/getgrav/grav"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/getgrav/grav","events":[{"introduced":"0"},{"fixed":"e4e0c06ea8a36c1a700aaac2545d7024f2cbe14c"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.0.0"}],"source":"CPE_FIELD"}}],"versions":["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","0.9.45","0.9.44","0.9.43","0.9.42","0.9.41","0.9.40","0.9.39","0.9.38","0.9.37","0.9.36","0.9.35","0.9.34","0.9.33","0.9.32","0.9.31","0.9.30","0.9.29","0.9.28","0.9.27","0.9.26","0.9.25","0.9.24","0.9.23","0.9.22","0.9.21","0.9.20","0.9.19","0.9.18","0.9.17","0.9.16","0.9.15","0.9.14","0.9.13","0.9.12","0.9.11","0.9.10","0.9.9","0.9.8","0.9.7","0.9.6","0.9.5","0.9.4","0.9.3","0.9.2","0.9.0","0.8.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-62387.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}]}