What is CVE-2020-37256?

CVE-2020-37256 is a medium-severity vulnerability in Grav, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-25.

How severe is CVE-2020-37256?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Grav

CVE-2020-37256

Grav before 1.6.30 contains a cross-site scripting vulnerability in the Admin plugin page editor default security configuration. Privileged users with page editing capabilities can inject malicious scripts to execute arbitrary code and ins…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Grav — versions 0, 1.6.30

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2020-37256?: CVE-2020-37256 is a medium-severity vulnerability in Grav, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-06-25.
How severe is CVE-2020-37256?: Medium severity. CVSS v3 base score is 5.4 out of 10.