CVE-2023-51374 MEDIUM

CVE-2023-51374: WordPress ZeroBounce Email Verification & Validation Plugin <= 1.0.11 is vulnerable to Cross Site Scripting (XSS)

Vendor Zerobounce
Product ZeroBounce Email Verification & Validation
Weakness CWE-79 · XSS
Published December 29, 2023
Last update April 28, 2026

CVSS base score

5.9/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ZeroBounce ZeroBounce Email Verification & Validation allows Stored XSS.This issue affects ZeroBounce Email Verification & Validation: from n/a through 1.0.11.

Explanation of Vulnerability in Simple Terms

02Summary

ZeroBounce Email Verification & Validation versions up to 1.0.11 contain a cross-site scripting (XSS) vulnerability. An authenticated administrator can inject malicious scripts that execute in other users' browsers when they interact with the affected component. The vulnerability requires user interaction and can affect the integrity and confidentiality of site data.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers to steal data or perform actions on their behalf.

Potential impact on your site

04Site Impact

A malicious admin can compromise other users' sessions and steal sensitive information through script injection.

Conditions required to exploit

05Prerequisites

Attacker must have high-level admin privileges and the victim must visit a page containing the injected payload.

Key dates

06Disclosure timeline

December 29, 2023 CVE published
April 28, 2026 Record updated

Related vulnerabilities

08Related CVE