CVE-2026-28560

Medium

Description

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.

SeverityMedium

CVSS5.5

Exploit probability—

ProductGvectors Wpforo Forum

PublishedFeb 28, 2026

First seenFeb 28, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

gvectors wpforo_forum2.4.16 or later

Patches

wordpress.org/plugins/wpforo/#developers

Affected products

Product	Affected versions	Fixed in
gvectors wpforo_forum	2.4.0 ≤ v < 2.4.16	2.4.16

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