Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder fusion-builder allows DOM-Based XSS.This issue affects Fusion Builder: from n/a through <= 3.13.2.
Published: 2025-10-22
Score: 6.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Improper neutralization of input during web page generation leads to DOM‑based cross‑site scripting. An attacker could inject and execute arbitrary JavaScript in the victim’s browser when a vulnerable page is loaded.

Affected Systems

The issue affects the WordPress Fusion Builder plugin from its earliest versions up through 3.13.2, distributed by ThemeFusion. Users running any of those versions within a WordPress installation are susceptible; no additional platform details or CPE strings are provided in the description.

Risk and Exploitability

The CVSS score of 6.5 indicates a moderate severity, while the EPSS score of <1% indicates a low but non‑zero likelihood of exploitation. The vulnerability is not listed in CISA’s KEV catalog. No additional details about exploitation path are provided in the CVE description.

Generated by OpenCVE AI on April 29, 2026 at 23:43 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Fusion Builder plugin to the latest version that incorporates the XSS fix.
  • If an upgrade cannot be performed immediately, restrict access to the plugin’s input interfaces to trusted users or administer authentication gating.
  • Deploy a web application firewall rule that blocks embedded JavaScript or suspicious input patterns targeting the plugin’s exposed endpoints.

Generated by OpenCVE AI on April 29, 2026 at 23:43 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Tue, 20 Jan 2026 15:30:00 +0000

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References

Tue, 20 Jan 2026 14:45:00 +0000

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Thu, 13 Nov 2025 11:30:00 +0000

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References

Thu, 13 Nov 2025 10:45:00 +0000

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References

Thu, 23 Oct 2025 18:15:00 +0000

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Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

 cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L'}

Thu, 23 Oct 2025 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress
Wordpress wordpress
Vendors & Products Wordpress
Wordpress wordpress

Wed, 22 Oct 2025 14:45:00 +0000

Type Values Removed Values Added
Description Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder fusion-builder allows DOM-Based XSS.This issue affects Fusion Builder: from n/a through <= 3.13.2.
Title WordPress Fusion Builder plugin <= 3.13.2 - Cross Site Scripting (XSS) vulnerability
Weaknesses CWE-79
References

Subscriptions

Wordpress Wordpress
cve-icon MITRE

Status: PUBLISHED

Assigner: Patchstack

Published:

Updated: 2026-04-28T20:26:21.983Z

Reserved: 2025-06-11T16:07:15.643Z

Link: CVE-2025-49940

cve-icon Vulnrichment

Updated: 2025-10-23T14:40:26.862Z

cve-icon NVD

Status : Deferred

Published: 2025-10-22T15:15:40.420

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-49940

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-29T23:45:16Z

Weaknesses
  • CWE-79

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