CVE-2026-28560: wpForo Forum 2.4.14 Stored XSS via Unsafe JSON Encoding in Inline Script

Published Feb 28, 2026
·
Updated

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 jsonencode without the JSONHEXTAG 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.

Affected Software

2 affected components
wpForo wpForo Forum
gVectors Wpforo Forum Wordpress>=2.4.0<2.4.16

Event History

Feb 28, 2026
CVE Published
via MITRE·09:47 PM
Data Sourced
via MITRE·09:47 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·10:16 PM
DescriptionSeverityWeaknessAffected Software
Oct 8, 58329
Event
via NVD·11:23 PM
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Frequently Asked Questions

1

What is the severity of CVE-2026-28560?

CVE-2026-28560 is classified as a medium severity vulnerability due to its potential for stored cross-site scripting attacks.

2

How do I fix CVE-2026-28560?

To mitigate CVE-2026-28560, update wpForo Forum to the latest version that addresses this vulnerability.

3

What type of vulnerability is CVE-2026-28560?

CVE-2026-28560 is a stored cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts.

4

Which software is affected by CVE-2026-28560?

CVE-2026-28560 affects wpForo Forum version 2.4.14.

5

What impact does CVE-2026-28560 have on users?

CVE-2026-28560 can lead to unauthorized script execution in users' browsers, potentially stealing sensitive information.

Contact

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