CVE-2026-28560

MEDIUM
2026-02-28 [email protected]
5.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 28, 2026 - 22:16 nvd
MEDIUM 5.5

Tags

XSS Wpforo Forum

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.

Analysis

Stored XSS in wpForo Forum 2.4.14 allows authenticated administrators to inject malicious scripts into forum slugs that execute in all visitors' browsers due to improper JSON encoding. An attacker with high-level privileges can craft a forum URL containing unescaped characters to break out of JavaScript context and achieve arbitrary script execution. …

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Remediation

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

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Priority Score

28
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +28
POC: 0

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CVE-2026-28560 vulnerability details – vuln.today
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