TI-2026-22424 Aliases CVE-2026-28083 GHSA-wc4c-6r77-mp37

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

LOW 28CWE-79Published 2026-02-26 · Updated 2026-04-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · Low
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00155 4th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
UX-themes	Flatsome	up to 3.20.5	—	No fix listed	CNA

Flatsome VendorUX-themes Affected up to 3.20.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-28083
2026-10-03 Alias added: GHSA-wc4c-6r77-mp37

References

Other 1

https://patchstack.com/database/Wordpress/Theme/flatsome/vulnerability/wordpress-flatsome-theme-3-20-1-cross-site-scripting-xss-vulnerability?_s_id=cve

TI-2023-21360 WordPress Flatsome Theme <= 3.17.5 is vulnerable to PHP Object Injection CVSS 3.1CRITICAL 9.8
TI-2026-41553 WordPress Flatsome theme <= 3.20.5 - Broken Access Control vulnerability CVSS 3.1HIGH 7.5
TI-2026-41552 WordPress Flatsome theme <= 3.20.5 - Reflected Cross Site Scripting (XSS) vulnerability CVSS 3.1HIGH 7.1
TI-2023-13456 WordPress Flatsome Theme <= 3.16.8 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1HIGH 7.1
TI-2026-24464 WordPress Flatsome theme <= 3.19.6 - Broken Access Control vulnerability CVSS 3.1MEDIUM 5.3
TI-2026-41555 WordPress Flatsome theme <= 3.20.5 - Broken Access Control vulnerability CVSS 3.1MEDIUM 6.5

See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences