Weakness (CWE)
CWE-79: Cross-site Scripting
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
How to prevent it (8 mitigations)
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Examples of libraries and frameworks that make it easier to generate properly encoded output include Microsoft's Anti-XSS library, the OWASP ESAPI Encoding module, and Apache Wicket.
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Implementation, Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages. Study all expected communication protocols and data representations to determine the required encoding strategies.
For any data that will be output to another web page, especially any data that was received from external inputs, use the appropriate encoding on all non-alphanumeric characters.
Parts of the same output document may require different encodings, which will vary depending on whether the output is in the:
- HTML body
- Element attributes (such as src="XYZ")
- URIs
- JavaScript sections
- Cascading Style Sheets and style property
etc. Note that HTML Entity Encoding is only appropriate for the HTML body.
Consult the XSS Prevention Cheat Sheet [REF-724] for more details on the types of encoding and escaping that are needed.
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Architecture and Design, Implementation
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Architecture and Design
If available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated.
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Implementation
Use and specify an output encoding that can be handled by the downstream component that is reading the output. Common encodings include ISO-8859-1, UTF-7, and UTF-8. When an encoding is not specified, a downstream component may choose a different encoding, either by assuming a default encoding or automatically inferring which encoding is being used, which can be erroneous. When the encodings are inconsistent, the downstream component might treat some character or byte sequences as special, even if they are not special in the original encoding. Attackers might then be able to exploit this discrepancy and conduct injection attacks; they even might be able to bypass protection mechanisms that assume the original encoding is also being used by the downstream component.
The problem of inconsistent output encodings often arises in web pages. If an encoding is not specified in an HTTP header, web browsers often guess about which encoding is being used. This can open up the browser to subtle XSS attacks.
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Implementation
With Struts, write all data from form beans with the bean's filter attribute set to true.
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Implementation
To help mitigate XSS attacks against the user's session cookie, set the session cookie to be HttpOnly. In browsers that support the HttpOnly feature (such as more recent versions of Internet Explorer and Firefox), this attribute can prevent the user's session cookie from being accessible to malicious client-side scripts that use document.cookie. This is not a complete solution, since HttpOnly is not supported by all browsers. More importantly, XmlHttpRequest and other powerful browser technologies provide read access to HTTP headers, including the Set-Cookie header in which the HttpOnly flag is set.
Source: MITRE CWE-79
6,268 results · Clear filters · Feed
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High 8.2
Masa CMS vulnerable to Cross-Site Scripting (XSS) through URL Parameter
Masa CMS is an open source Enterprise Content Management platform. Versions 7.2.8 and below, 7.3.1 through 7.3.13, 7.4.0-alpha.1 through 7.4.8 and 7.5.0 through 7.5.1 are vulnerable to XSS when an unsanitized value of the ajax URL query parameter is directly …
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High 8.6
Insufficient HTML Sanitization Allows User-Controlled DOM Elements to Overwrite Server-Initialized Data Islands and Trigger Unintended Server-Side POST Requests
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed user-supplied HTML to inject DOM elements with IDs that collided with server-initialized data islands. These collisions could overwrite or shadow critica…
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High 8.0
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 15.11 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have, under certain circumstances, allowed an unauthenticated user to perform unauthorized actions on behalf …
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High 8.7
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.4 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that, under certain conditions could have allowed an authenticated user to perform unauthorized actions on behalf of anot…
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High 8.8
edoc-doctor-appointment-system v1.0.1 is vulnerable to Cross Site Scripting (XSS) in admin/add-session.php via the "tit…
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High 7.1
Shopware's inproper input validation can lead to Reflected XSS through Storefront Login Page
Shopware is an open commerce platform. Versions 6.4.6.0 through 6.6.10.9 and 6.7.0.0 through 6.7.5.0 have a Reflected XSS vulnerability in AuthController.php. A request parameter from the login page URL is directly rendered within the Twig template of the Sto…
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High 8.0
Jenkins Coverage Plugin has a stored cross-site scripting (XSS) vulnerability
Jenkins Coverage Plugin 2.3054.ve1ff7b_a_a_123b_ and earlier does not validate the configured coverage results ID when creating coverage results, only when submitting the job configuration through the UI, allowing attackers with Item/Configure permission to u…
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High 8.0
ZITADEL Vulnerable to Account Takeover via DOM-Based XSS in Zitadel V2 Login
ZITADEL is an open-source identity infrastructure tool. Versions 4.0.0-rc.1 through 4.7.0 are vulnerable to DOM-Based XSS through the Zitadel V2 logout endpoint. The /logout endpoint insecurely routes to a value that is supplied in the post_logout_redirect GE…
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High 8.8
Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.1
WordPress Themify Portfolio Post plugin <= 1.3.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in themifyme Themify Portfolio Post themify-portfolio-post allows Stored XSS.This issue affects Themify Portfolio Post: from n/a through <= 1.3.0.
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High 7.2
Social Reviews & Recommendations <= 2.5 - Unauthenticated Stored Cross-Site Scripting via Social Media Reviews
The Social Reviews & Recommendations plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several parameters in the 'trim_text' function in all versions up to, and including, 2.5 due to insufficient input sanitization and output escaping. Thi…
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High 7.1
Reflected XSS vulnerability in dyn_conn.php
An XSS vulnerability in dyn_conn.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST request to the device in order to change parameters available via web based management (WBM). The vulnerability do…
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High 7.1
Reflected XSS vulnerability in pxc_portCntr2.php
An XSS vulnerability in pxc_portCntr2.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST request to the device in order to change parameters available via web based management (WBM). The vulnerabili…
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High 7.1CVE-2025-41746 EPSS 10%
Reflected XSS vulnerability in pxc_portSecCfg.php
An XSS vulnerability in pxc_portSecCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST request to the device in order to change parameters available via web based management (WBM). The vulnerabil…
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High 7.1CVE-2025-41747 EPSS 10%
Reflected XSS vulnerability in pxc_vlanIntfCfg.php
An XSS vulnerability in pxc_vlanIntfCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to send a manipulated POST request to the device in order to change parameters available via web based management (WBM). The vulnerabi…
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High 7.1CVE-2025-41748 EPSS 10%
Reflected XSS vulnerability in pxc_Dot1xCfg.php
An XSS vulnerability in pxc_Dot1xCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability d…
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High 7.1
Reflected XSS vulnerability in port_util.php
An XSS vulnerability in port_util.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability does…
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High 7.1CVE-2025-41750 EPSS 10%
Reflected XSS vulnerability in pxc_PortCfg.php
An XSS vulnerability in pxc_PortCfg.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability do…
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High 7.1CVE-2025-41751 EPSS 10%
Reflected XSS vulnerability in pxc_portCntr.php
An XSS vulnerability in pxc_portCntr.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability d…
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High 7.1CVE-2025-41752 EPSS 10%
Reflected XSS vulnerability in pxc_portSfp.php
An XSS vulnerability in pxc_portSfp.php can be used by an unauthenticated remote attacker to trick an authenticated user to click on the link provided by the attacker in order to change parameters available via web based management (WBM). The vulnerability do…
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High 7.1
Custom Admin Menu <= 1.0.0 - Reflected XSS
The Custom Admin Menu WordPress plugin through 1.0.0 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin.
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High 7.2
Login Security, FireWall, Malware removal by CleanTalk <= 2.168 - Unauthenticated Stored Cross-Site Scripting via Page URL
The Login Security, FireWall, Malware removal by CleanTalk plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the page URL in all versions up to, and including, 2.168 due to insufficient input sanitization and output escaping. This makes it…
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High 8.3
CSRF vulnerability in CIRCL Vulnerability-Lookup
In affected versions, vulnerability-lookup handled user-controlled content in comments and bundles in an unsafe way, which could lead to stored Cross-Site Scripting (XSS). On the backend, the related_vulnerabilities field of bundles accepted arbitrary strings…
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High 8.7
Reflected Cross-site Scripting (XSS) vulnerability affecting ENOVIA Collaborative Industry Innovator from Release 3DEXPERIENCE R2022x through Release 3DEXPERIENCE R2025x
A reflected Cross-site Scripting (XSS) vulnerability affecting ENOVIA Collaborative Industry Innovator from Release 3DEXPERIENCE R2022x through Release 3DEXPERIENCE R2025x allows an attacker to execute arbitrary script code in user's browser session.
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High 7.2
Rich Shortcodes for Google Reviews <= 6.8 - Unauthenticated Stored Cross-Site Scripting via Google Review
The Rich Shortcodes for Google Reviews plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the contents of a Google Review in all versions up to, and including, 6.8 due to insufficient input sanitization and output escaping. This makes it po…
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High 7.2
Widgets for Google Reviews <= 13.2.4 - Unauthenticated Stored Cross-Site Scripting via Google Reviews
The Widgets for Google Reviews plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 13.2.4 due to insufficient input sanitization and output escaping on Google Reviews data imported by the plugin. This makes …
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High 8.9
TUUI vulnerable to Remote Code Execution (RCE) via XSS in Markdown ECharts Rendering
TUUI is a desktop MCP client designed as a tool unitary utility integration. Prior to 1.3.4, a critical Remote Code Execution (RCE) vulnerability exists in Tuui due to an unsafe Cross-Site Scripting (XSS) flaw in the Markdown rendering component. Tuui allows …
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High 8.1
Cool Tag Cloud <= 2.29 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Cool Tag Cloud plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'cool_tag_cloud' shortcode in all versions up to, and including, 2.29 due to insufficient input sanitization and output escaping on user supplied attributes.…
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High 7.1
Monkeytype vulnerable to stored XSS in approve quotes page
Monkeytype is a minimalistic and customizable typing test. In 25.49.0 and earlier, there is improper handling of user input which allows an attacker to execute malicious javascript on anyone viewing a malicious quote submission. quote.text and quote.source ar…
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High 7.3
SysReptor Vulnerable to an Authenticated Stored Cross-Site Scripting (XSS)
SysReptor is a fully customizable pentest reporting platform. Prior to 2025.102, there is a Stored Cross-Site Scripting (XSS) vulnerability allows authenticated users to execute malicious JavaScript in the context of other logged-in users by uploading malicio…
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High 8.7
Open WebUI vulnerable to Stored DOM XSS via Note 'Download PDF'
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.37, a Stored XSS vulnerability was discovered in Open-WebUI's Notes PDF download functionality. An attacker can import a Markdown file containing m…
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High 7.2
Omnichannel for WooCommerce: Google, Amazon, eBay & Walmart Integration - Powered by Codisto <= 1.3.65 - Unauthenticated Stored Cross-Site Scripting
The Omnichannel for WooCommerce: Google, Amazon, eBay & Walmart Integration – Powered by Codisto plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the sync() function in all versions up to, and including, 1.3.65 due to insufficient input s…
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High 7.6CVE-2025-65027 Public exploit
RomM Chained XSS and CSRF Vulnerabilities Enable Admin Account Takeover
RomM (ROM Manager) allows users to scan, enrich, browse and play their game collections with a clean and responsive interface. RomM contains multiple unrestricted file upload vulnerabilities that allow authenticated users to upload malicious SVG or HTML files…
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High 8.1
Inappropriate implementation in WebRTC in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to perform arb…
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High 7.7
Aimeos GrapesJS CMS extension possible stores XSS exploitable by authenticated editors
The Aimeos GrapesJS CMS extension provides page editor for creating content pages based on extensible components. Prior to 2021.10.8, 2022.10.8, 2023.10.8, 2024.10.8, and 2025.10.8, Javascript code can be injected by malicious editors for a stored XSS attack …
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High 7.2
Kadence WooCommerce Email Designer <= 1.5.17 - Unauthenticated Stored Cross-Site Scripting
The Kadence WooCommerce Email Designer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customer name in all versions up to, and including, 1.5.17 due to insufficient input sanitization and output escaping. This makes it possible for …
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High 8.5
Angular Stored XSS Vulnerability via SVG Animation, SVG URL and MathML Attributes
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 21.0.2, 20.3.15, and 19.2.17, A Stored Cross-Site Scripting (XSS) vulnerability has been identified in the Angular Tem…
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High 8.5
A cross-site scripting (XSS) vulnerability exists in the Blood Bank Management System 1.0 within the updateprofile.php …
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High 8.5
A cross-site scripting (XSS) vulnerability exists in the Blood Bank Management System 1.0 within the login.php componen…
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High 8.5
A cross-site scripting (XSS) vulnerability exists in the Blood Bank Management System within the abs.php component. The…