CVE-2026-62387

High

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.

SeverityHigh

CVSS7.1

Exploit probability—

Product

Grav

PublishedJul 17, 2026

First seenJul 17, 2026

Weakness typeCWE-942CWE-942

How to fix

Update

getgrav grav1.0.0-rc.16 or later

Vendor advisories

github.com/getgrav/grav/security/advisories/GHSA-93px-98wh-6fj2

Affected products

Product	Affected versions	Fixed in
getgrav grav	v < 1.0.0-rc.16	1.0.0-rc.16

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