#js

Prototype pollution vulnerability in `mergeDeep` after merging results of two standard schema validations with the same key. Due to the ordering of merging, there must be an `any` type that is set as a `standalone` guard, to allow for the `__proto__` prop to be merged. When combined with GHSA-8vch-m3f4-q8jf this allows for a full RCE by an attacker. ### Impact Routes with more than 2 standalone schema validation, eg. zod Example vulnerable code: ```typescript import { Elysia } from "elysia" import * as z from "zod" const app = new Elysia() .guard({ schema: "standalone", body: z.object({ data: z.any() }) }) .post("/", ({ body }) => ({ body, win: {}.foo }), { body: z.object({ data: z.object({ messageId: z.string("pollute-me"), }) }) }) ``` ### Patches Patched by 1.4.17 (https://github.com/elysiajs/elysia/pull/1564) Reference commit: - https://github.com/elysiajs/elysia/pull/1564/commits/26935bf76ebc43b4a43d48b173fc853de43bb51e - https://github.com/elysiaj...

View CSAF 1. EXECUTIVE SUMMARY CVSS v3 6.1 ATTENTION: Exploitable remotely/low attack complexity Vendor: Festo SE & Co. KG Equipment: LX Appliance Vulnerability: Cross-site Scripting 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a user of LX Appliance with a high privilege account to craft a malicious course and launch an XSS attack. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Festo reports that the following products are affected: Festo Software LX Appliance: Versions prior to June 2023 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79 The "src" attribute of the "track" tag allows a malicious user to bypass HTML escaping and execute arbitrary code. This affects the package video.js before 7.14.3. CVE-2021-23414 has been assigned to this vulnerability. A CVSS v3.1 base score of 6.1 has been calculated; the CVSS vector string is (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N). 3.3 BAC...

Zero Trust helps organizations shrink their attack surface and respond to threats faster, but many still struggle to implement it because their security tools don’t share signals reliably. 88% of organizations admit they’ve suffered significant challenges in trying to implement such approaches, according to Accenture. When products can’t communicate, real-time access decisions break down. The

### Summary A potential vulnerability exists in ZITADEL's logout endpoint in login V2. This endpoint accepts serval parameters including a `post_logout_redirect`. When this parameter is specified, users will be redirected to the site that is provided via this parameter. ZITADEL's login UI did not ensure that this parameter contained an allowed value and even executed passed scripts. ### Impact Zitadel is vulnerable to a DOM-Based XSS vulnerability. More specifically, the /logout endpoint insecurely routed to value that is supplied in the post_logout_redirect GET parameter. As a result, malicious JS code could be executed on Zitadel users’ browsers, in the Zitadel V2 Login domain. An unauthenticated remote attacker can exploit this DOM-based XSS vulnerability, and thus, execute malicious JavaScript code on behalf of Zitadel users. By doing so, such an attacker could reset the password of their victims, and take over their accounts. Note that for this to work, multiple user sessions...

## Summary Arbitrary Remote Code Execution on development server via unsafe dynamic imports in `@vitejs/plugin-rsc` server function APIs (`loadServerAction`, `decodeReply`, `decodeAction`) when integrated into RSC applications that expose server function endpoints. ## Impact Attackers with network access to the development server can execute arbitrary JavaScript code with Node.js privileges, allowing them to read/modify files, exfiltrate sensitive data (source code, environment variables, credentials), or pivot to other internal services. While this affects development servers only, the risk increases when using `vite --host` to expose the server on all network interfaces. ## Details In the example RSC application provided in Proof of Concept, the server handles server function call through API such as `loadServerAction`, `decodeReply`, `decodeAction` with http request's header and body as inputs: https://github.com/vitejs/vite-plugin-react/blob/c8af971f57f12d0190d7fd8829a429f5e...

### Summary A Cross-Site Scripting (XSS) vulnerability exists in the `ui.interactive_image` component of NiceGUI (v3.3.1 and earlier). The component renders SVG content using Vue's `v-html` directive without any sanitization. This allows attackers to inject malicious HTML or JavaScript via the SVG `<foreignObject>` tag. ### Details The vulnerability is located in `nicegui/elements/interactive_image.js`. The component uses the following code to render content: ```javascript <g v-html="content"></g> ``` Vue's v-html directive renders raw HTML strings into the DOM. If an application allows user-controlled input to be passed to the content property of an interactive image, an attacker can embed a <foreignObject> tag containing malicious scripts, bypassing typical image restrictions. ### PoC ```python from nicegui import ui @ui.page('/') def main(): ui.label('NiceGUI SVG XSS PoC') # Standard image loading img = ui.interactive_image('[https://picsum.photos/640/360](https:...

### Summary A Cross-Site Scripting (XSS) vulnerability exists in `ui.add_css`, `ui.add_scss`, and `ui.add_sass` functions in NiceGUI (v3.3.1 and earlier). These functions allow developers to inject styles dynamically. However, they lack proper sanitization or encoding for the JavaScript context they generate. An attacker can break out of the intended `<style>` or `<script>` tags by injecting closing tags (e.g., `</style>` or `</script>`), allowing for the execution of arbitrary JavaScript. ### Details The vulnerability stems from how these functions inject content into the DOM using `client.run_javascript` (or `add_head_html` internally) without sufficient escaping for the transport layer. * **`ui.add_css`**: Injects content into a `<style>` tag. Input containing `</style>` closes the tag prematurely, allowing subsequent HTML/JS injection. * **`ui.add_scss` / `ui.add_sass`**: These rely on client-side compilation within `<script>` tags. Input containing `</script>` breaks the execut...

Securonix Threat Research details the complex JS#SMUGGLER campaign, a three-step web attack using obfuscated JavaScript and hidden HTA files to install the NetSupport RAT on user Windows desktops, granting hackers full remote control and persistent access.

Cybersecurity researchers are calling attention to a new campaign dubbed JS#SMUGGLER that has been observed leveraging compromised websites as a distribution vector for a remote access trojan named NetSupport RAT. The attack chain, analyzed by Securonix, involves three main moving parts: An obfuscated JavaScript loader injected into a website, an HTML Application (HTA) that runs encrypted

Over 30 security vulnerabilities have been disclosed in various artificial intelligence (AI)-powered Integrated Development Environments (IDEs) that combine prompt injection primitives with legitimate features to achieve data exfiltration and remote code execution. The security shortcomings have been collectively named IDEsaster by security researcher Ari Marzouk (MaccariTA). They affect popular