CVE-2025-14436

HIGH EXPLOITED

Brevo for WooCommerce <4.0.49 - XSS

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2025-14436 has been observed exploited in the wild (reported by VulnCheck KEV). EIP tracks 1 public exploit from researchers including moritakaaz.

AI-analyzed exploit summary This repository contains a functional exploit for CVE-2025-14436, an unauthenticated stored XSS vulnerability in the Brevo for WooCommerce plugin. The exploit injects arbitrary JavaScript payloads via the `user_connection_id` parameter, which executes when an admin visits the plugin settings page.

Description

The Brevo for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘user_connection_id’ parameter in all versions up to, and including, 4.0.49 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Exploits (1)

gitlab WORKING POC
by moritakaaz · poc
https://gitlab.com/moritakaaz/cve-2025-14436

This repository contains a functional exploit for CVE-2025-14436, an unauthenticated stored XSS vulnerability in the Brevo for WooCommerce plugin. The exploit injects arbitrary JavaScript payloads via the `user_connection_id` parameter, which executes when an admin visits the plugin settings page.

Classification
Working Poc 95%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: Brevo for WooCommerce plugin ≤ 4.0.49
No auth needed
Prerequisites: Target must have Brevo for WooCommerce plugin installed and activated (version ≤ 4.0.49)
devstral-2 · analyzed Feb 23, 2026 Full analysis →

Scores

CVSS v3 7.2
EPSS 0.0017
EPSS Percentile 37.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

VulnCheck KEV 2026-01-09
CWE
CWE-79
Status published
Products (1)
neeraj_slit/Brevo for WooCommerce < 4.0.49
Published Jan 08, 2026
Tracked Since Feb 18, 2026