CVE-2023-40555 | BDVDB-2026-220057 Detail

UX-themesFlatsome | Multi-Purpose Responsive WooCommerce Theme

Description#

Deserialization of Untrusted Data vulnerability in UX-themes Flatsome | Multi-Purpose Responsive WooCommerce Theme.This issue affects Flatsome | Multi-Purpose Responsive WooCommerce Theme: from n/a through 3.17.5.

Impact#

Per CVSS v3.1: confidentiality impact low, integrity impact low, availability impact low. Attack vector: network.

Weaknesses#

CWE-502 Deserialization of Untrusted Data

References#

https://patchstack.com/database/vulnerability/flatsome/wordpress-flatsome-theme-3-17-5-unauthenticated-php-object-injection-vulnerability?_s_id=cve

Exploit#

No public exploit known

History#

Version 12023-12-20Record published in the CVE List.
Version 22026-04-28Most recent update recorded in the CVE List.

Published

Published: 2023-12-20
Last modified: 2026-04-28

Vendor information

Vendor: UX-themes
Product: Flatsome | Multi-Purpose Responsive WooCommerce Theme

All UX-themes vulnerabilities

Score

8.3 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 49.1.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Insecure Deserialization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
<= 3.17.5
Fixed
Not stated
Vulnerable
Not stated
Fixed
3.17.6

Scoring System

CVSS v4.0

Not available

CVSS v3.1

8.3 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Changed
Confidentiality	Low
Integrity	Low
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).