What is CVE-2026-62387?

CVE-2026-62387 is a high-severity vulnerability in Getgrav Grav, classified under Permissive Cross-domain Policy with Untrusted Domains. CVSS score: 7.1/10. Published 2026-07-17.

How severe is CVE-2026-62387?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Getgrav Grav

CVE-2026-62387

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 pl…

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

Affected products

Getgrav Grav — versions 0, 1.0.0-rc.16

Weakness classification (CWE)

CWE-942 — Permissive Cross-domain Policy with Untrusted Domains

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-62387?: CVE-2026-62387 is a high-severity vulnerability in Getgrav Grav, classified under Permissive Cross-domain Policy with Untrusted Domains. CVSS score: 7.1/10. Published 2026-07-17.
How severe is CVE-2026-62387?: High severity. CVSS v3 base score is 7.1 out of 10.