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 8.5
n8n Vulnerable to Stored XSS via Various Nodes
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could inject arbitrary scripts into pages rendered by the n8n application using different te…
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High 8.9
Storybook Dev Server Vulnerable to WebSocket Hijacking
Storybook is a frontend workshop for building user interface components and pages in isolation. Prior to versions 7.6.23, 8.6.17, 9.1.19, and 10.2.10, the WebSocket functionality in Storybook's dev server, used to create and update stories, is vulnerable to W…
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High 7.3
Vikunja Vulnerable to Stored Cross-Site Scripting (XSS) via Unsanitized SVG Attachment Upload Leading to Token Exposure
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to upload SVG files as task attachments. SVG is an XML-based format that supports JavaScript execution through elements such as <script> tags …
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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 16.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that under certain circumstances, could have allowed an unauthenticated user to inject arbitrary scripts into the Mermaid…
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High 8.0
VMware Aria Operations stored cross-site scripting vulnerability
VMware Aria Operations contains a stored cross-site scripting vulnerability. A malicious actor with privileges to create custom benchmarks may be able to inject script to perform administrative actions in VMware Aria Operations. To remediate CVE-2026-22720, …
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High 7.3
Rucio WebUI Vulnerable to Stored Cross-site Scripting (XSS) through Custom Rule Function
Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. Versions prior to 35.8.3, 38.5.4, and 39.3.1 have a stored Cross-Site Scripting (XSS) vulnerability in the …
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High 8.1
Rucio WebUI has a Reflected Cross-site Scripting Vulnerability
Rucio is a software framework that provides functionality to organize, manage, and access large volumes of scientific data using customizable policies. A reflected Cross-site Scripting vulnerability was located in versions prior to 35.8.3, 38.5.4, and 39.3.1 …
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High 7.2
OpenEMR has Stored XSS in Questionnaire answers
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, users with the "Forms administration" role can fill questionnaires ("forms") in patient encounters. The answers to the forms are d…
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High 8.2
Karakeep's Reddit plugin content bypasses DOMPurify sanitization, enabling stored XSS
Karakeep is a elf-hostable bookmark-everything app. In version 0.30.0, when the Reddit metascraper plugin returns `readableContentHtml`, the HTML parsing subprocess uses it directly without running it through DOMPurify. Every other content source in the crawl…
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High 8.5
Mercator vulnerable to stored XSS via unescaped Blade directives in display templates
Mercator is an open source web application designed to enable mapping of information systems. A stored Cross-Site Scripting (XSS) vulnerability exists in Mercator prior to version 2026.02.22 due to the use of unescaped Blade directives (`{!! !!}`) in display …
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High 8.7
OpenEMR has a Stored XSS in GAD-7 Form that Enables Session Hijacking and Privilege Escalation
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, a stored cross-site scripting vulnerability in the GAD-7 anxiety assessment form allows authenticated users with clinician privile…
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High 8.5
OpenEMR has Stored XSS in ub04 helper
OpenEMR is a free and open source electronic health records and medical practice management application. Versions 5.0.0.5 through 7.0.3.4 have a stored cross-site scripting vulnerability in the ub04 helper of the billing interface. The variable `$data` is pas…
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High 7.6
New API has Potential XSS in its MarkdownRenderer component
New API is a large language mode (LLM) gateway and artificial intelligence (AI) asset management system. Prior to version 0.10.8-alpha.9, a potential unsafe operation occurs in component `MarkdownRenderer.jsx`, allowing for Cross-Site Scripting(XSS) when the …
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High 8.7
Traccar Vulnerable to Stored Cross-Site Scripting (XSS) via Malicious SVG File Upload
Versions of the Traccar open-source GPS tracking system starting with 6.11.1 contain an issue in which authenticated users can execute arbitrary JavaScript in the context of other users' browsers by uploading malicious SVG files as device images. The applicat…
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High 8.1
Statamic affected by privilege escalation via stored Cross-site Scripting
Statmatic is a Laravel and Git powered content management system (CMS). Versions 5.73.8 and below in addition to 6.0.0-alpha.1 through 6.3.1 have a Stored XSS vulnerability in html fieldtypes which allows authenticated users with field management permissions …
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High 8.9
OpenSift: Persistent XSS Chat Tool Rendering
OpenSift is an AI study tool that sifts through large datasets using semantic search and generative AI. Versions 1.1.2-alpha and below render untrusted user/model content in chat tool UI surfaces using unsafe HTML interpolation patterns, leading to XSS. Store…
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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 7.1
WordPress PixelYourSite – Your smart PIXEL (TAG) Manager plugin <= 11.2.0.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PixelYourSite PixelYourSite – Your smart PIXEL (TAG) Manager pixelyoursite allows Stored XSS.This issue affects PixelYourSite – Your smart PIXEL (TAG) Manage…
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High 7.1
WordPress Reflector plugin <= 1.2.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fox-themes Reflector reflector-plugins allows Reflected XSS.This issue affects Reflector: from n/a through <= 1.2.2.
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High 7.1
WordPress PhotoMe theme <= 5.7.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods PhotoMe photome allows DOM-Based XSS.This issue affects PhotoMe: from n/a through <= 5.7.1.
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High 7.1
WordPress Whizz Plugins plugin <= 1.9 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fox-themes Whizz Plugins whizz-plugins allows Reflected XSS.This issue affects Whizz Plugins: from n/a through <= 1.9.
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High 7.1
WordPress Grand Conference theme <= 5.3.4 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Grand Conference grandconference allows Reflected XSS.This issue affects Grand Conference: from n/a through <= 5.3.4.
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High 7.1
WordPress Link Whisper Free plugin <= 0.9.2 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Spencer Haws Link Whisper Free link-whisper allows Reflected XSS.This issue affects Link Whisper Free: from n/a through <= 0.9.2.
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High 7.1
WordPress Persian Woocommerce SMS plugin <= 7.1.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PersianScript Persian Woocommerce SMS persian-woocommerce-sms allows Reflected XSS.This issue affects Persian Woocommerce SMS: from n/a through <= 7.1.1.
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High 7.1
WordPress Business Template Blocks for WPBakery (Visual Composer) Page Builder plugin <= 1.3.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in themebon Business Template Blocks for WPBakery (Visual Composer) Page Builder templates-and-addons-for-wpbakery-page-builder allows Reflected XSS.This issue …
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High 7.1
WordPress Visitor Maps Extended Referer Field plugin <= 1.2.6 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Hugh Mungus Visitor Maps Extended Referer Field visitor-maps-extended-referer-field allows Reflected XSS.This issue affects Visitor Maps Extended Referer Fie…
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High 7.1
WordPress Diamond theme <= 2.4.8 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in GT3themes Diamond diamond allows Reflected XSS.This issue affects Diamond: from n/a through <= 2.4.8.
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High 7.1
WordPress iMoney plugin <= 0.36 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in itex iMoney imoney allows Reflected XSS.This issue affects iMoney: from n/a through <= 0.36.
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High 7.1
WordPress RVCFDI para Woocommerce plugin <= 8.1.8 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in realvirtualmx RVCFDI para Woocommerce rvcfdi-para-woocommerce allows Reflected XSS.This issue affects RVCFDI para Woocommerce: from n/a through <= 8.1.8.
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High 7.1
WordPress Timeline Event History plugin <= 3.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpdiscover Timeline Event History timeline-event-history allows Reflected XSS.This issue affects Timeline Event History: from n/a through <= 3.2.
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High 7.1
WordPress Oyster - Photography WordPress Theme theme <= 4.4.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in GT3themes Oyster - Photography WordPress Theme oyster allows DOM-Based XSS.This issue affects Oyster - Photography WordPress Theme: from n/a through <= 4.4.3.
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High 7.1
WordPress SOHO - Photography WordPress Theme theme <= 3.0.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in GT3themes SOHO - Photography WordPress Theme soho allows DOM-Based XSS.This issue affects SOHO - Photography WordPress Theme: from n/a through <= 3.0.3.
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High 7.1
WordPress Prestige theme < 1.4.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jthemes Prestige prestige allows Reflected XSS.This issue affects Prestige: from n/a through < 1.4.1.
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High 7.1
WordPress NEX-Forms plugin <= 9.1.7 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Basix NEX-Forms nex-forms-express-wp-form-builder allows Reflected XSS.This issue affects NEX-Forms: from n/a through <= 9.1.7.
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High 7.1
WordPress NEX-Forms plugin <= 9.1.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Basix NEX-Forms nex-forms-express-wp-form-builder allows Stored XSS.This issue affects NEX-Forms: from n/a through <= 9.1.7.
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High 7.1
WordPress Slimstat Analytics plugin <= 5.3.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in VeronaLabs Slimstat Analytics wp-slimstat allows Reflected XSS.This issue affects Slimstat Analytics: from n/a through <= 5.3.2.
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High 7.1
WordPress DesignThemes Core Features plugin <= 2.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in designthemes DesignThemes Core Features designthemes-core-features allows Reflected XSS.This issue affects DesignThemes Core Features: from n/a through <= 2.…
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High 7.1
WordPress Aardvark theme <= 4.6.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in GhostPool Aardvark aardvark allows Reflected XSS.This issue affects Aardvark: from n/a through <= 4.6.3.
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High 7.1
WordPress Mopinion Feedback Form plugin <= 1.1.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in keeswolters Mopinion Feedback Form mopinion-feedback-form allows DOM-Based XSS.This issue affects Mopinion Feedback Form: from n/a through <= 1.1.1.
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High 7.1
WordPress iContact for Gravity Forms plugin <= 1.3.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Zack Katz iContact for Gravity Forms gravity-forms-icontact allows Reflected XSS.This issue affects iContact for Gravity Forms: from n/a through <= 1.3.2.