CVE-2026-28560

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-28560
wpForo Forum 2.4.14 contains a stored cross-site scripting vulnerability that allows script injection via forum URL data output into an inline script block using json_encode without the JSON_HEX_TAG flag. Attackers set a forum slug containing a closing script tag or unescaped single quote to break out of the JavaScript string context and execute arbitrary script in all visitors' browsers.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References
Link Resource
https://wordpress.org/plugins/wpforo/ Product
https://wordpress.org/plugins/wpforo/#developers Release Notes
https://www.vulncheck.com/advisories/wpforo-forum-stored-xss-via-unsafe-json-encoding-in-inline-script Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*
History

04 Mar 2026, 02:47

Type Values Removed Values Added
References () https://wordpress.org/plugins/wpforo/ - () https://wordpress.org/plugins/wpforo/ - Product
References () https://wordpress.org/plugins/wpforo/#developers - () https://wordpress.org/plugins/wpforo/#developers - Release Notes
References () https://www.vulncheck.com/advisories/wpforo-forum-stored-xss-via-unsafe-json-encoding-in-inline-script - () https://www.vulncheck.com/advisories/wpforo-forum-stored-xss-via-unsafe-json-encoding-in-inline-script - Third Party Advisory
First Time Gvectors
Gvectors wpforo Forum
CPE cpe:2.3:a:gvectors:wpforo_forum:*:*:*:*:*:wordpress:*:*

02 Mar 2026, 20:30

Type Values Removed Values Added
Summary
  • (es) wpForo Forum 2.4.14 contiene una vulnerabilidad de cross-site scripting almacenado que permite la inyección de scripts a través de la salida de datos de la URL del foro en un bloque de script en línea utilizando json_encode sin la bandera JSON_HEX_TAG. Los atacantes configuran un slug de foro que contiene una etiqueta de cierre de script o una comilla simple sin escapar para salir del contexto de cadena de JavaScript y ejecutar scripts arbitrarios en los navegadores de todos los visitantes.

28 Feb 2026, 22:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-28 22:16

Updated : 2026-03-04 02:47

NVD link : CVE-2026-28560

Mitre link : CVE-2026-28560

CVE.ORG link : CVE-2026-28560

JSON object : View

Products Affected

gvectors

  • wpforo_forum
CWE
CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')