CVE-2026-62387

HIGH 7.1

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

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-942
Vendor	getgrav
Product	grav
Published	Jul 17, 2026

Stay Ahead of the Next One

Get instant alerts for getgrav grav

Be the first to know when new high vulnerabilities affecting getgrav grav are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

getgrav / grav

0 < 1.0.0-rc.16

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 nicl4ssic