CVE-2024-5346Network attack vector

Stored XSS via unescaped shortcode attributes

Published Jun 22, 2024 · Updated Apr 8, 2026

Stored XSS in UX Themes Flatsome 3.18.7 and earlier allows remote authenticated users to execute scripts through shortcode attributes. The UX Countdown, Video Button, UX Video, UX Slider, UX Sidebar, and UX Payment Icons handlers fail to sanitize supplied attributes or escape them during page rendering. Contributor-level access is required to store a payload, and the script runs in the browser of anyone who opens the injected page.

CVSS severity6.4
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in UX Themes Flatsome 3.18.7 and earlier allows remote authenticated users to execute scripts through shortcode attributes. The UX Countdown, Video Button, UX Video, UX Slider, UX Sidebar, and UX Payment Icons handlers fail to sanitize supplied attributes or escape them during page rendering. Contributor-level access is required to store a payload, and the script runs in the browser of anyone who opens the injected page.

The record

CVE
CVE-2024-5346
Published
Jun 22, 2024
Updated
Apr 8, 2026
Vendor
UX Themes
Product
Flatsome
Classifications
CWE-79, T1189
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 22, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 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 <=3.18.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

UX Themes · Flatsomeversion=0 <=3.18.7

Published CVSS scores

5.4NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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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