Name: CVE-2023-5560: Improper Neutralization of Input During Web Page Generation
Creator: Rapid7
Published: 2023-11-27T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2023-5560, CWE-79, CVSS 6.1, EPSS 0.00576

The WP-UserOnline WordPress plugin before 2.88.3 does not sanitise and escape the X-Forwarded-For header before outputting its content on the page, which allows unauthenticated users to perform Cross-Site Scripting attacks.

CVSS Details

CVSS 3.1 Base Score: 6.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Wp Useronline Plugin	—	Update wp-useronline plugin to version 2.88.3, or a newer patched version	May 15, 2025	Nov 6, 2023

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CVSS Details

Covered by Rapid7

Prioritize with Active Threat Intelligence