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 install malicious plugins for system access.

CVSS 4.0

5.1CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

CVSS 3.1

5.4CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-25)

CWE

CWE-79

Published

2026-06-25

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• getgrav:grav

References

• https://github.com/getgrav/grav/security/advisories/GHSA-cvmr-6428-87w9
• https://www.vulncheck.com/advisories/grav-cross-site-scripting-in-admin-plugin-page-editor

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