CVE-2026-63407: high-severity vulnerability in getgrav grav-plugin-api
Grav API Plugin: CORS 'Access-Control-Allow-Origin: *' on Authenticated API Responses
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.4%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Affected products
getgrav · grav-plugin-apiRelated CVEs — getgrav grav-plugin-api
In the same product, most dangerous first.
CVE-2026-112779CRITICALGrav API Plugin before 1.0.42 Cache Exhaustion and Page Permission BypassEPSS 0.8%CVE-2026-62666HIGHGrav API Plugin: non-super api.users.write manager -> super-admin via createApiKey (incomplete fix of CVE-2026-59190); + 2FA strip of superEPSS 0.6%CVE-2026-63408HIGHGrav API Plugin: JWT Access Token Accepted via `?token=` URL Query ParameterEPSS 0.5%CVE-2026-72833HIGHGrav 1.0.6 through 1.0.11 Privilege Escalation via Scoped API KeysEPSS 0.5%CVE-2026-72826HIGHGrav API Plugin before 1.0.13 Scope Bypass via createApiKeyEPSS 0.5%CVE-2026-62668CRITICALGrav API Plugin: Webhook SSRF via Unrestricted cURL ProtocolsEPSS 0.4%