CVE-2020-37256
Received Received - Intake
Grav Admin Plugin XSS Vulnerability

Publication date: 2026-06-25

Last updated on: 2026-06-25

Assigner: VulnCheck

Description
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.
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Meta Information
Published
2026-06-25
Last Modified
2026-06-25
Generated
2026-06-26
AI Q&A
2026-06-26
EPSS Evaluated
N/A
NVD
CVE-2020-37256
EUVD
EUVD-2020-31260
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
grav admin_plugin to 1.6.30 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability exists in Grav versions before 1.6.30 within the Admin plugin's page editor default security configuration. It is a cross-site scripting (XSS) vulnerability that allows privileged users who have page editing capabilities to inject malicious scripts.

These malicious scripts can execute arbitrary code and enable the installation of malicious plugins, potentially giving attackers system access.

Impact Analysis

The vulnerability can lead to unauthorized code execution and installation of malicious plugins by privileged users with page editing rights.

This could compromise the integrity and security of the system, potentially allowing attackers to gain system access and perform unauthorized actions.

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