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Fencer Intel
high 7.1

CVE-2026-57728 json

WordPress Flatsome theme <= 3.20.5 - Reflected Cross Site Scripting (XSS) vulnerability

published 3mo ago modified 18d ago also EUVD-2026-43374

cvss
7.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 16%
public exploits
0
none known

Summary

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in UX-themes Flatsome flatsome allows Reflected XSS.This issue affects Flatsome: from n/a through <= 3.20.5.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
3mo ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 16% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 3.1 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Affected products

  • UX-themes Flatsome

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.