CVE-2025-26879 HIGH

CVE-2025-26879: WordPress s2Member Plugin <= 241216 - Reflected Cross Site Scripting (XSS) vulnerability

Vendor Cristián Lávaque
Product s2Member
Weakness CWE-79 · XSS
Published March 3, 2025
Last update April 29, 2026

CVSS base score

7.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/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 Cristián Lávaque s2Member s2member allows Reflected XSS.This issue affects s2Member: from n/a through <= 241216.

Explanation of Vulnerability in Simple Terms

02Summary

s2Member contains a cross-site scripting (XSS) vulnerability that allows an attacker to inject malicious scripts into web pages viewed by other users. The vulnerability requires user interaction—typically clicking a malicious link—and can affect multiple users across the site. Versions up to 241216 are affected. Update to a version newer than 241216 to remediate.

What an attacker can do

03Attacker Capabilities

Inject malicious JavaScript that runs in other users' browsers and steals session data or performs actions on their behalf.

Potential impact on your site

04Site Impact

Site users can be tricked into executing attacker code, risking account compromise and data theft.

Conditions required to exploit

05Prerequisites

No authentication required. Victim must click a malicious link or visit an attacker-controlled page.

Key dates

06Disclosure timeline

March 3, 2025 CVE published
April 29, 2026 Record updated

Related vulnerabilities

08Related CVE