What the vulnerability does
01Description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in marekki Marekkis Watermark marekkis-watermark allows Reflected XSS.This issue affects Marekkis Watermark: from n/a through <= 0.9.4.
Explanation of Vulnerability in Simple Terms
02Summary
Marekkis Watermark versions 0.9.4 and earlier contain a cross-site scripting (XSS) vulnerability that allows attackers to inject malicious scripts into web pages. The vulnerability requires user interaction—typically clicking a malicious link—and can affect other users viewing the compromised page. An attacker with no authentication can exploit this to steal session tokens, deface content, or redirect users to phishing sites.
What an attacker can do
03Attacker Capabilities
Inject malicious JavaScript that runs in other users' browsers when they visit an affected page.
Potential impact on your site
04Site Impact
Users' sessions and credentials can be compromised; site content can be defaced or altered for visitors.
Conditions required to exploit
05Prerequisites
Victim must click a malicious link or visit a page containing the attacker's payload; no authentication required.
Key dates
06Disclosure timeline
March 3, 2025
CVE published
April 28, 2026
Record updated