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Vulnerabilities CVE-2026-62387

CVE-2026-62387

High
Open
TLP:CLEAR

Grav < 1.0.0-rc.16 CORS Misconfiguration via API Plugin

NVD CVE.org
Data Exfiltration

AI Analysis

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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.

Details

CVSS Score
7.1
EPSS Score
0.26%

17.8th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 17, 2026
Last Modified
Jul 17, 2026
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