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
143 results · Clear filters · Feed
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High 7.0CVE-2026-41653 Public exploit
BentoPDF: Stored XSS via Markdown Editor Leading to Persistent File Exfiltration
BentoPDF is a client-side PDF toolkit that is self hostable. Prior to version 2.8.3, a cross-site scripting vulnerability was identified in BentoPD. An attacker may be able to execute arbitrary JavaScript in certain circumstances in Markdown to PDF Tool. This…
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High 8.9CVE-2026-40487 Public exploit
Postiz Has Unrestricted File Upload via MIME Type Spoofing that Leads to Stored XSS
Postiz is an AI social media scheduling tool. Prior to version 2.21.6, a file upload validation bypass allows any authenticated user to upload arbitrary HTML, SVG, or other executable file types to the server by spoofing the `Content-Type` header. The uploade…
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High 8.0CVE-2026-31281 Public exploit
Totara LMS v19.1.5 and before is vulnerable to HTML Injection. An attacker can inject malicious HTML code in a message …
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High 7.3CVE-2026-35455 Public exploit
immich has Stored XSS via OCR Text in 360° Panorama Viewer
immich is a high performance self-hosted photo and video management solution. Prior to 2.7.0, sStored Cross-Site Scripting (XSS) in the 360° panorama viewer allows any authenticated user to execute arbitrary JavaScript in the browser of any other user who vie…
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High 8.6CVE-2026-39338 Public exploit
ChurchCRM has Blind XSS via Global Search – Administrative Cookie Session Exfiltration
ChurchCRM is an open-source church management system. Prior to 7.1.0, a Blind Reflected Cross-Site Scripting vulnerability exists in the search parameter accepted by the ChurchCRM dashboard. The application fails to sanitize or encode user-supplied input prio…
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High 8.2CVE-2026-33331 Public exploit
oRPC: Stored XSS in OpenAPI Reference Plugin via unescaped JSON.stringify
oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to version 1.13.9, a stored cross-site scripting (XSS) vulnerability exists in the OpenAPI documentation generation of orpc. If an attacker can control …
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High 8.6CVE-2026-32635 Public exploit
Angular has XSS in i18n attribute bindings
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 22.0.0-next.3, 21.2.4, 20.3.18, and 19.2.20, a Cross-Site Scripting (XSS) vulnerability has been identified in the Ang…
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High 8.6CVE-2025-66024 Public exploit
XWiki Blog Application home page vulnerable to Stored XSS via Post Title
The XWiki blog application allows users of the XWiki platform to create and manage blog posts. Versions starting with 9.15 and prior to 9.15.7 are vulnerable to Stored Cross-Site Scripting (XSS) via the Blog Post Title. The vulnerability arises because the po…
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High 8.6CVE-2026-2472 Public exploit
Stored Cross-Site Scripting (XSS) in Vertex AI Python SDK Visualization
Stored Cross-Site Scripting (XSS) in the _genai/_evals_visualization component of Google Cloud Vertex AI SDK (google-cloud-aiplatform) versions from 1.98.0 up to (but not including) 1.131.0 allows an unauthenticated remote attacker to execute arbitrary JavaSc…
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High 7.3
Admin Account Takeover via malicious URL payload
Cross-site scripting in REST Management Interface in Payara Server <4.1.2.191.54, <5.83.0, <6.34.0, <7.2026.1 allows an attacker to mislead the administrator to change the admin password via URL Payload.
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High 7.2CVE-2026-1844 Public exploit
PixelYourSite PRO <= 12.4.0.2 - Unauthenticated Stored Cross-Site Scripting
The PixelYourSite PRO plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pysTrafficSource' parameter and the 'pys_landing_page' parameter in all versions up to, and including, 12.4.0.2 due to insufficient input sanitization and output …
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High 8.2CVE-2026-1953 Public exploit
Stored Cross Site Scripting(XSS) in Nukegraphic CMS V3.1.2
Nukegraphic CMS v3.1.2 contains a stored cross-site scripting (XSS) vulnerability in the user profile edit functionality at /ngc-cms/user-edit-profile.php. The application fails to properly sanitize user input in the name field before storing it in the databa…
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High 7.1CVE-2025-67923 Public exploit
WordPress JetEngine plugin <= 3.7.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetEngine jet-engine allows Reflected XSS.This issue affects JetEngine: from n/a through <= 3.7.7.
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High 8.5CVE-2026-23499 Public exploit
Saleor vulnerable to stored XSS via Unrestricted File Upload
Saleor is an e-commerce platform. Starting in version 3.0.0 and prior to versions 3.20.108, 3.21.43, and 3.22.27, Saleor allowed authenticated staff users or Apps to upload arbitrary files, including malicious HTML and SVG files containing Javascript. Dependi…
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High 8.0CVE-2026-1010 Public exploit
Stored Cross-Site Scripting in Altium Enterprise Server Workflow Engine Allows Privilege Escalation
A stored cross-site scripting (XSS) vulnerability exists in the Altium Workflow Engine due to missing server-side input sanitization in workflow form submission APIs. A regular authenticated user can inject arbitrary JavaScript into workflow data. When an adm…
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High 8.0CVE-2026-22804 Public exploit
Termix has a Stored XSS in File Manager leading to Local File Inclusion (LFI) in Electron and Session Hijacking in Browser
Termix is a web-based server management platform with SSH terminal, tunneling, and file editing capabilities. From 1.7.0 to 1.9.0, Stored Cross-Site Scripting (XSS) vulnerability exists in the Termix File Manager component. The application fails to sanitize S…
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High 8.1CVE-2026-22704 Public exploit
HAXcms Has Stored XSS Vulnerability that May Lead to Account Takeover
HAX CMS helps manage microsite universe with PHP or NodeJs backends. In versions 11.0.6 to before 25.0.0, HAX CMS is vulnerable to stored XSS, which could lead to account takeover. This issue has been patched in version 25.0.0.
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High 8.5CVE-2026-22610 Public exploit
Angular has XSS Vulnerability via Unsanitized SVG Script Attributes
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to versions 19.2.18, 20.3.16, 21.0.7, and 21.1.0-rc.0, a cross-site scripting (XSS) vulnerability has been identified in …
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High 7.6CVE-2025-59057 Public exploit
React Router has XSS Vulnerability
React Router is a router for React. In @remix-run/react versions 1.15.0 through 2.17.0. and react-router versions 7.0.0 through 7.8.2, a XSS vulnerability exists in in React Router's meta()/<Meta> APIs in Framework Mode when generating script:ld+json tags whi…
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High 7.2CVE-2025-14855 Public exploit
SureForms <= 2.2.0 - Unauthenticated Stored Cross-Site Scripting
The SureForms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form field parameters in all versions up to, and including, 2.2.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated at…
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High 7.2
Roundcube Webmail before 1.5.12 and 1.6 before 1.6.12 is prone to a Cross-Site-Scripting (XSS) vulnerability via the an…
KEV Feb 20, 2026 -
High 8.1CVE-2025-68147 Public exploit
opensourcepos has a Cross-site Scripting vulnerability
Open Source Point of Sale (opensourcepos) is a web based point of sale application written in PHP using CodeIgniter framework. Starting in version 3.4.0 and prior to version 3.4.2, a Stored Cross-Site Scripting (XSS) vulnerability exists in the "Return Policy…
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High 8.5CVE-2025-67875 Public exploit
ChurchCRM has stored XSS via Person Property Assignment Leading to Admin Session Hijacking
ChurchCRM is an open-source church management system. A privilege escalation vulnerability exists in ChurchCRM prior to version 6.5.3. An authenticated user with specific mid-level permissions ("Edit Records" and "Manage Properties and Classifications") can i…
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High 8.9CVE-2025-68116 Public exploit
FileRise vulnerable to Cross-Site Scripting (XSS) in SVG File Handling
FileRise is a self-hosted web file manager / WebDAV server. Versions prior to 2.7.1 are vulnerable to Stored Cross-Site Scripting (XSS) due to unsafe handling of browser-renderable user uploads when served through the sharing and download endpoints. An attack…
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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 7.1CVE-2025-13159 Public exploit
Flo Forms – Easy Drag & Drop Form Builder <= 1.0.43 - Unauthenticated Stored Cross-Site Scripting via SVG Upload
The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.0.43. This is due to the plugin allowing SVG file uploads via an unauthenticated AJAX …
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High 7.2CVE-2025-12135 Public exploit
WPBookit <= 1.0.6 - Unauthenticated Stored Cross-Site Scripting
The WPBookit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'css_code' parameter in all versions up to, and including, 1.0.6 due to a missing capability check on the save_custome_code() function. This makes it possible for unauthent…
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High 7.2CVE-2025-12904 Public exploit
SNORDIAN's H5PxAPIkatchu <= 0.4.17 - Unauthenticated Stored Cross-Site Scripting via insert_data
The SNORDIAN's H5PxAPIkatchu plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'insert_data' AJAX endpoint in all versions up to, and including, 0.4.17 due to insufficient input sanitization and output escaping. This makes it possible …
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High 8.7CVE-2025-64495 Public exploit
Open WebUI vulnerable to Stored DOM XSS via prompts when 'Insert Prompt as Rich Text' is enabled resulting in ATO/RCE
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. In versions 0.6.34 and below, the functionality that inserts custom prompts into the chat window is vulnerable to DOM XSS when 'Insert Prompt as Rich Text' is e…
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High 8.1CVE-2025-63307 Public exploit
alexusmai laravel-file-manager 3.3.1 is vulnerable to Cross Site Scripting (XSS). The application permits user-controll…
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High 7.1CVE-2025-63588 Public exploit
An unauthenticated reflected cross-site scripting vulnerability in the query handling of CMSimpleXH allows remote attac…
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High 7.1CVE-2025-63589 Public exploit
A reflected XSS vulnerability exists in CMSimple_XH 1.8's index.php router when attacker-controlled path segments are n…
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High 7.3CVE-2025-63441 Public exploit
Open Source Social Network (OSSN) 8.6 is vulnerable to Cross Site Scripting (XSS) via the parameter param` at endpoint …
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High 8.7CVE-2025-60503 Public exploit
A cross-site scripting (XSS) vulnerability exists in the administrative interface of ultimatefosters UltimatePOS 4.8 wh…
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High 8.1CVE-2025-60378 Public exploit
Stored HTML injection in RISE Ultimate Project Manager & CRM allows authenticated users to inject arbitrary HTML into i…
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High 8.3CVE-2025-60880 Public exploit
Bagisto is vulnerable to XSS through Admin Panel's product creation path
An authenticated stored XSS vulnerability exists in the Bagisto 2.3.6 admin panel's product creation path, allowing an attacker to upload a crafted SVG file containing malicious JavaScript code. This vulnerability can be exploited by an authenticated admin us…
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High 8.8CVE-2025-56515 Public exploit
Fiora chat group avatar is vulnerable to XSS via SVG files
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 eve…
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High 8.1CVE-2025-57483 Public exploit
A reflected cross-site scripting (XSS) vulnerability in tawk.to chatbox widget v4 allows attackers to execute arbitrary…
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High 7.2
WP Statistics <= 14.5.4 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header
The WP Statistics – The Most Popular Privacy-Friendly Analytics Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the User-Agent Header in all versions up to, and including, 14.5.4 due to insufficient input sanitization and output e…
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High 7.3CVE-2025-55888 Public exploit
Cross-Site Scripting (XSS) vulnerability was discovered in the Ajax transaction manager endpoint of ARD. An attacker ca…