Risk Letters

Exploited vulnerability

CVE-2023-39306

TLP:CLEAR

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

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeFusion Fusion Builder allows Reflected XSS.This issue affects Fusion Builder: from n/a through 3.11.1.

Facts

  • Vendor: avada
  • Product: fusion_builder
  • EPSS (probability of exploitation within 30 days): 0.4 %
  • First known exploitation: 13 October 2026
  • First seen by Risk Letters: 13 October 2026

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD