CVE-2026-62387 – Grav < 1.0.0-rc.16 CORS Misconfiguration via API Plugin

CVE ID :CVE-2026-62387

Published : July 17, 2026, 2:18 a.m. | 1 hour, 17 minutes ago

Description :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.

Severity: 7.1 | HIGH

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