CVE-2026-62387: Getgrav Grav

High severity, CVSS 7.1. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Getgrav Grav: before 1.0.0-rc.16 (fixed in 1.0.0-rc.16)

Published 2026-07-17. Last modified 2026-07-17.