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 7.1
WordPress LBG Zoominoutslider plugin <= 5.4.5 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup LBG Zoominoutslider lbg_zoominoutslider allows Reflected XSS.This issue affects LBG Zoominoutslider: from n/a through <= 5.4.5.
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High 7.1
WordPress UberSlider PerpetuumMobile plugin <= 2.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup UberSlider PerpetuumMobile uberSlider_perpetuummobile allows Reflected XSS.This issue affects UberSlider PerpetuumMobile: from n/a through <= 2.…
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High 7.1
WordPress UberSlider MouseInteraction plugin <= 2.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup UberSlider MouseInteraction uberSlider_mouseinteraction allows Reflected XSS.This issue affects UberSlider MouseInteraction: from n/a through <=…
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High 7.1
WordPress UberSlider Ultra plugin <= 2.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LambertGroup UberSlider Ultra uberSlider_ultra allows Reflected XSS.This issue affects UberSlider Ultra: from n/a through <= 2.3.
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High 7.1
WordPress Porto theme <= 7.6.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in p-themes Porto porto allows Reflected XSS.This issue affects Porto: from n/a through <= 7.6.2.
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High 7.1
WordPress pixfort Core plugin <= 3.2.22 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PixFort pixfort Core pixfort-core allows Reflected XSS.This issue affects pixfort Core: from n/a through <= 3.2.22.
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High 7.1
WordPress Listify plugin <= 3.2.5 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Astoundify Listify listify allows Reflected XSS.This issue affects Listify: from n/a through <= 3.2.5.
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High 7.1
WordPress EventON plugin <= 4.9.12 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ashanjay EventON eventon allows Reflected XSS.This issue affects EventON: from n/a through <= 4.9.12.
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High 7.1
WordPress DesignThemes Portfolio plugin <= 1.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in designthemes DesignThemes Portfolio designthemes-portfolio allows Reflected XSS.This issue affects DesignThemes Portfolio: from n/a through <= 1.3.
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High 7.1
WordPress Metro theme <= 2.13 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in RadiusTheme Metro metro allows DOM-Based XSS.This issue affects Metro: from n/a through <= 2.13.
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High 7.1
WordPress Claue - Clean, Minimal Elementor WooCommerce Theme theme <= 2.2.7 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in JanStudio Claue - Clean, Minimal Elementor WooCommerce Theme claue allows Reflected XSS.This issue affects Claue - Clean, Minimal Elementor WooCommerce Theme…
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High 7.1
WordPress Gecko theme <= 1.9.8 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in JanStudio Gecko gecko allows Reflected XSS.This issue affects Gecko: from n/a through <= 1.9.8.
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High 7.1
WordPress WP Bakery Autoresponder Addon plugin <= 1.0.6 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in kamleshyadav WP Bakery Autoresponder Addon vc-autoresponder-addon allows Stored XSS.This issue affects WP Bakery Autoresponder Addon: from n/a through <= 1.0…
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High 7.1
WordPress Musico theme < 3.4.5 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Musico musico allows Reflected XSS.This issue affects Musico: from n/a through < 3.4.5.
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High 7.1
WordPress Awa Plugins plugin <= 1.4.4 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fox-themes Awa Plugins awa-plugins allows Reflected XSS.This issue affects Awa Plugins: from n/a through <= 1.4.4.
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High 7.1
WordPress Architecturer theme < 3.9.5 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Architecturer architecturer allows Reflected XSS.This issue affects Architecturer: from n/a through < 3.9.5.
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High 7.1
WordPress Photography theme < 7.7.6 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Photography photography allows DOM-Based XSS.This issue affects Photography: from n/a through < 7.7.6.
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High 7.1
WordPress Starto theme < 2.2.5 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Starto starto allows Reflected XSS.This issue affects Starto: from n/a through < 2.2.5.
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High 7.1
WordPress Grand News | Magazine Newspaper WordPress theme <= 3.4.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGoods Grand News grandnews allows Reflected XSS.This issue affects Grand News: from n/a through <= 3.4.3.
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High 7.1
WordPress Agrofood theme < 1.4.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in skygroup Agrofood agrofood allows Reflected XSS.This issue affects Agrofood: from n/a through < 1.4.0.
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High 7.1
WordPress DeepDigital theme <= 1.0.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in mwtemplates DeepDigital deepdigital allows Reflected XSS.This issue affects DeepDigital: from n/a through <= 1.0.2.
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High 7.1
WordPress BuddyApp theme <= 1.9.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in SeventhQueen BuddyApp buddyapp allows Reflected XSS.This issue affects BuddyApp: from n/a through <= 1.9.2.
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High 7.1
WordPress Thebe theme <= 1.3.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in foreverpinetree Thebe thebe allows Reflected XSS.This issue affects Thebe: from n/a through <= 1.3.0.
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High 7.1
WordPress Thecs theme <= 1.4.7 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in foreverpinetree Thecs thecs allows Reflected XSS.This issue affects Thecs: from n/a through <= 1.4.7.
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High 7.1
WordPress TheBi theme <= 1.0.5 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in foreverpinetree TheBi thebi allows Reflected XSS.This issue affects TheBi: from n/a through <= 1.0.5.
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High 7.2
Fluent Forms Pro <= 6.1.17 - Unauthenticated Stored Cross-Site Scripting via Draft Form Submission
The Fluent Forms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `fluentform_step_form_save_data` AJAX action in all versions up to, and including, 6.1.17. This is due to the draft form submission endpoint being publicly accessib…
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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 7.2
WPBookit <= 1.0.8 - Unauthenticated Stored Cross-Site Scripting via 'wpb_user_name' and 'wpb_user_email' Parameters
The WPBookit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpb_user_name' and 'wpb_user_email' parameters in all versions up to, and including, 1.0.8 due to insufficient input sanitization and output escaping. This makes it possib…
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High 7.2
WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms <= 1.1.5 - Unauthenticated Stored Cross-Site Scripting
The WP Zendesk for Contact Form 7, WPForms, Elementor, Formidable and Ninja Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form submission data in all versions up to, and including, 1.1.5 due to insufficient input sanitization and…
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High 8.8
Chamilo: Stored XSS Vulnerability via CSV User Import
Chamilo is a learning management system. Prior to version 1.11.30, an input validation vulnerability exists when importing user data from CSV files. This flaw occurs due to insufficient sanitization of user data, specifically in the "Last Name", "First Name",…
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High 8.3
Chamilo: Stored XSS in glossary function via /main/glossary/index.php trigger in /main/tracking/course_log_resources.php
Chamilo is a learning management system. Prior to version 1.11.30, a Stored XSS vulnerability exists in the glossary function, enabling all users with the Teachers role to inject JavaScript malicious code against the administrator. This issue has been patched…
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High 8.7
Statamic vulnerable to privilege escalation via stored cross-site scripting
Statmatic is a Laravel and Git powered content management system (CMS). Prior to versions 5.73.11 and 6.4.0, stored XSS vulnerability in svg and icon related components allow authenticated users with appropriate permissions to inject malicious JavaScript that…
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High 8.1
Kiteworks Email Protection Gateway has a Cross-site Scripting vulnerability
Kiteworks is a private data network (PDN). Prior to version 9.2.0, a vulnerability in Kiteworks Email Protection Gateway allows authenticated administrators to inject malicious scripts through a configuration interface. The stored script executes when users i…
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High 8.7
PublicCMS v5.202506.d and earlier is vulnerable to stored XSS. Uploaded PDFs can contain JavaScript payloads and bypass…
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High 8.3
CleverTap Web SDK is vulnerable to DOM-based XSS via handleCustomHtmlPreviewPostMessageEvent function
CleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-Site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewPostMessageEvent function in src/util/campaignRender/nativeDisplay.js performs insufficient origin validation using the…
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High 8.3
CleverTap Web SDK is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage
CleverTap Web SDK version 1.15.2 and earlier is vulnerable to DOM-based Cross-Site Scripting (XSS) via window.postMessage in the Visual Builder module. The origin validation in src/modules/visualBuilder/pageBuilder.js (lines 56-60) uses the includes() method …
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High 8.7
Initiative Vulnerable to Token Theft via Stored XSS in Document Uploads
Initiative is a self-hosted project management platform. Versions of the application prior to 0.32.4 are vulnerable to Stored Cross-Site Scripting (XSS) in the document upload functionality. Any user with upload permissions within the "Initiatives" section ca…
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High 7.6
Reflected XSS in Dokuzsoft Technology's E-Commerce Product
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Dokuzsoft Technology Ltd. E-Commerce Product allows Reflected XSS. This issue affects E-Commerce Product: through 10122025.
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High 7.3
Cross-site scripting in HTML logs of Synthetic Monitoring test services
Improper neutralization of input in Checkmk versions 2.4.0 before 2.4.0p22, and 2.3.0 before 2.3.0p43 allows an attacker that can manipulate a host's check output to inject malicious JavaScript into the Synthetic Monitoring HTML logs, which can then be access…
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High 7.6
Angular i18n vulnerable to Cross-Site Scripting (XSS)
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Versions prior to 21.2.0, 21.1.16, 20.3.17, and 19.2.19 have a cross-Site scripting vulnerability in the Angular internationali…