CVE-2021-24177: WP File Manager < 7.1 - Reflected Cross-Site Scripting (XSS)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-04-05 · updated 2026-06-17
Weakness: CWE-79

Description

In the default configuration of the File Manager WordPress plugin before 7.1, a Reflected XSS can occur on the endpoint /wp-admin/admin.php?page=wp_file_manager_properties when a payload is submitted on the User-Agent parameter. The payload is then reflected back on the web application response.

Affected products

File Manager Pro: before 7.1 — fixed in 7.1

How to fix

Upgrade to a fixed version: File Manager Pro 7.1. Check the vendor advisory for mitigations.

References

https://n4nj0.github.io/advisories/wordpress-plugin-wp-file-manager-i/
https://plugins.trac.wordpress.org/changeset/2476829/
https://wpscan.com/vulnerability/1cf3d256-cf4b-4d1f-9ed8-e2cc6392d8d8
https://n4nj0.github.io/advisories/wordpress-plugin-wp-file-manager-i/
https://plugins.trac.wordpress.org/changeset/2476829/
https://wpscan.com/vulnerability/1cf3d256-cf4b-4d1f-9ed8-e2cc6392d8d8

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