CVE-2026-63407

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 v3 8.2 HIGH

8.2^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/getgrav/grav-plugin-api/commit/56ae2ca3bf36c8299a4b3d376c6a20e8c0ed5ba9
https://github.com/getgrav/grav-plugin-api/releases/tag/1.0.0-rc.16
https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2
https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 16:18

Updated : 2026-09-09 21:13

NVD link : CVE-2026-63407

Mitre link : CVE-2026-63407

CVE.ORG link : CVE-2026-63407

JSON object : View

Products Affected

No product.

CWE

CWE-942

Permissive Cross-domain Security Policy with Untrusted Domains

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