CVE-2026-57728Network attack vector

Unauthenticated browser script execution via reflected input

Published Jul 13, 2026 · Updated Jul 13, 2026

Reflected XSS in UX Themes Flatsome 3.20.5 and earlier allows remote attackers to execute script in a visitor's browser via a crafted request. Patchstack has not published the affected parameter or code path, only that the flaw is reflected XSS in generated web content. Exploitation is unauthenticated but requires a visitor to open a malicious link or crafted page, allowing the script to act within that site's browser origin.

CVSS severity7.1
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in UX Themes Flatsome 3.20.5 and earlier allows remote attackers to execute script in a visitor's browser via a crafted request. Patchstack has not published the affected parameter or code path, only that the flaw is reflected XSS in generated web content. Exploitation is unauthenticated but requires a visitor to open a malicious link or crafted page, allowing the script to act within that site's browser origin.

The record

CVE
CVE-2026-57728
Published
Jul 13, 2026
Updated
Jul 13, 2026
Vendor
UX Themes
Product
Flatsome
Classifications
CWE-79, CAPEC-591, T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=3.20.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

UX Themes · Flatsomeversion=0 <=3.20.5

Published CVSS scores

7.1PatchstackCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC-591Reflected XSS
T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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