CVE-2025-39489 CRITICAL

CVE-2025-39489: WordPress CouponXL theme <= 4.5.0 - Privilege Escalation Vulnerability

Vendor Pebas
Product CouponXL
Weakness CWE-266
Published May 23, 2025
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Incorrect Privilege Assignment vulnerability in pebas CouponXL couponxl allows Privilege Escalation.This issue affects CouponXL: from n/a through <= 4.5.0.

Explanation of Vulnerability in Simple Terms

02Summary

CouponXL versions 4.5.0 and earlier contain a critical vulnerability that allows unauthenticated attackers to read sensitive data, modify site content, or disrupt service without any user interaction. The vulnerability stems from improper privilege controls (CWE-266) and can be exploited remotely over the network. All users should update immediately to a version newer than 4.5.0.

What an attacker can do

03Attacker Capabilities

Read sensitive data, modify site content, or disable the site without logging in.

Potential impact on your site

04Site Impact

Attackers can steal customer data, alter coupon terms, or take the coupon system offline without warning.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

May 23, 2025 CVE published
April 28, 2026 Record updated