CVE-2026-62387

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2
https://www.vulncheck.com/advisories/grav-rc-16-cors-misconfiguration-via-api-plugin
https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2

Configurations

No configuration.

History

17 Jul 2026, 13:18

Type	Values Removed	Values Added
References	~~() https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2 -~~	() https://github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2 -

17 Jul 2026, 02:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-17 02:18

Updated : 2026-07-17 15:44

NVD link : CVE-2026-62387

Mitre link : CVE-2026-62387

CVE.ORG link : CVE-2026-62387

JSON object : View

Products Affected

No product.

CWE

CWE-942

Permissive Cross-domain Policy with Untrusted Domains

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