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
32,779 results · Feed
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High 7.1
WordPress Unlimited Elements For Elementor (Free Widgets, Addons, Templates) plugin <= 2.0.24 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Unlimited Elements Unlimited Elements For Elementor (Free Widgets, Addons, Templates) unlimited-elements-for-elementor allows Reflected XSS.This issue affect…
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High 7.1CVE-2026-115596 Public exploit
WordPress eCommerce Product Catalog plugin <= 3.6.4 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in impleCode eCommerce Product Catalog ecommerce-product-catalog allows Reflected XSS.This issue affects eCommerce Product Catalog: from n/a through 3.6.4.
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Medium 6.5
WordPress WP Discussion Board plugin <= 2.6.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WP Discussion Board WP Discussion Board wp-discussion-board allows Stored XSS.This issue affects WP Discussion Board: from n/a through 2.6.0.
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High 7.1
WordPress GetPaid plugin <= 2.8.62 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Stiofan GetPaid invoicing allows Stored XSS.This issue affects GetPaid: from n/a through 2.8.62.
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High 7.1
WordPress DXP ToolKit plugin <= 2.0.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crowd Favorite DXP ToolKit dxp-toolkit allows Stored XSS.This issue affects DXP ToolKit: from n/a through 2.0.1.
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High 8.6
HCL BigFix AEX is affected by multiple security vulnerabilities.
HCL BigFix AEX is affected by an Unrestricted File Upload and Improper Access Control vulnerability. This could allow an attacker to upload malicious or unauthorized files and directly access or download sensitive uploaded content, potentially leading to info…
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High 8.6
Joomla Extension - icagenda.com - Authenticated Stored XSS in iCagenda 4.0.8 to 4.0.12
Joomla Extension - icagenda.com - Stored XSS via url-type event Custom Field in iCagenda 3.2.1 to 4.0.16
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Medium 5.7
Cross-site scripting (XSS) vulnerability due to improper input validation. The following products are affected: Acronis…
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Medium 5.4
Stored XSS Fazile BACAK's DefterAsist Financial Advisor Platform
Improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Fazile BACAK DefterAsist Financial Advisor Platform allows Stored XSS. This issue affects DefterAsist Financial Advisor Platform: through 2026-10-27.
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Medium 6.1
Echo Knowledge Base <= 17.214.0 - Reflected Cross-Site Scripting via 'new_kb_config' Parameter
The Echo Knowledge Base – Documentation, FAQs, Chat & Smart Search plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'new_kb_config' parameter (specifically the article-mobile-break-point-v2 key, among other config keys interpolated…
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Medium 6.4
Cozy Blocks <= 2.2.27 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'icon.view' Block Attribute
The Cozy Blocks – Website Builder for WordPress Block Editor | Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content (block attribute icon.view / icon.layout / icon.gap)' parameter in all ver…
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Medium 4.9
Hustle <= 7.8.14.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'cta_label' Parameter
The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content[cta_label]' parameter in all versions up to, and including, 7.8.14.3 due to insufficient input sanitization and ou…
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Medium 6.4
Document Embedder <= 2.4.0 - Authenticated (Contributor+) Stored DOM-Based Cross-Site Scripting via 'documentSource.doc' Block Attribute
The Document Embedder – let visitors read files without downloading plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'content (post_content containing block JSON documentSource.doc)' parameter in all versions up to, and incl…
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Medium 6.4
Post Snippets <= 4.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
The Post Snippets – Custom WordPress Code Snippets Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Shortcode Attributes in all versions up to, and including, 4.2.4 due to insufficient input sanitization and output escaping. Th…
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Medium 6.4
Hustle <= 7.8.14.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Module Content Title
The Hustle – Email Marketing, Lead Generation, Optins, Popups plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content[title]' parameter in all versions up to, and including, 7.8.14.3 due to insufficient input sanitization and output…
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Medium 4.4
Product Addons for Woocommerce <= 3.1.8 - Authenticated (Shop Manager+) Stored Cross-Site Scripting via 'type' Field Parameter
The Product Addons for Woocommerce – Product Options with Custom Fields plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'fields[section][fields][row][col][type]' parameter in all versions up to, and including, 3.1.8 due to insufficie…
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Medium 5.4
CMB2 <= 2.13.4 - Unauthenticated Stored Cross-Site Scripting via Grouped WYSIWYG Field via Front-End Form
The CMB2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'cmb43ex1_grp[0][txt] (wysiwyg field inside group — field id controlled by integrator config)' parameter in all versions up to, and including, 2.13.4 due to insufficient input …
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Medium 6.4
easy.jobs <= 2.8.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'icon' Block Attribute
The easy.jobs – AI powered Job Listing, Job Board, Career Page, Recruitment & Hiring Solution plugin for WordPress is vulnerable to Authenticated (Contributor+) Stored Cross-Site Scripting via the 'icon' attribute of the easyjobs/job-list Gutenberg block in a…
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Medium 6.4
Mang Board <= 2.4.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'align' Shortcode Attribute
The Mang Board plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'align' parameter in all versions up to, and including, 2.4.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attacke…
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High 7.2
Prime Slider <= 4.7.2 - Unauthenticated Stored Cross-Site Scripting via Comment Content via Content_Guard Regex Quote-Escape
The Prime Slider – Hero Slider, Carousel, WooCommerce & Post Slider Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.7.2 due to insufficient input sanitizati…
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Medium 6.4
VikRentCar Car Rental Management System <= 1.4.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'className' Block Attribute
The VikRentCar Car Rental Management System plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'className' parameter in all versions up to, and including, 1.4.10 due to insufficient input sanitization and output escaping. This makes it …
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Medium 6.1
Webheadcoder Multi-Step Forms for Contact Form 7 <= 4.7 - Reflected Cross-Site Scripting via 'l10n_print_after' Parameter
The Webheadcoder Multi-Step Forms for Contact Form 7 plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'l10n_print_after' parameter in all versions up to, and including, 4.7 due to insufficient input sanitization and output escaping…
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Medium 6.4
Avada (Fusion) Builder <= 3.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tab_index' and 'empty_notice' Shortcode Attributes
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_index, empty_notice' parameter in all versions up to, and including, 3.16.2 due to insufficient input sanitization and output escaping. This makes it pos…
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Medium 5.4
Postie <= 1.9.87 - Unauthenticated Stored Cross-Site Scripting via Email Body URL Autolink
The Postie plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Email Body URL Autolink in all versions up to, and including, 1.9.87 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attack…
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Medium 6.4
If-So Dynamic Content <= 1.10.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'repeater' Parameter
The If-So Dynamic Content – Elementor & All Page Builders Personalization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'repeater[*][version_uid] (and many sibling fields: freeze-mode, cookie-input, ip-input, compare, utm-value, pa…
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Medium 6.4
Waitlist Woocommerce ( Back in stock notifier ) <= 2.9.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'type' Shortcode Attribute
The Waitlist Woocommerce ( Back in stock notifier ) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'type' Shortcode Attribute in all versions up to, and including, 2.9.1 due to insufficient input sanitization and output escaping. This m…
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Medium 6.4
If-So Dynamic Content <= 1.10.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'conversion' Shortcode Attribute
The If-So Dynamic Content – Elementor & All Page Builders Personalization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'conversion' Shortcode Attribute in all versions up to, and including, 1.10.2 due to insufficient input sanitizatio…
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Medium 6.4
Cozy Blocks <= 2.2.27 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'productRating.iconColor' Block Attribute
The Cozy Blocks – Website Builder for WordPress Block Editor | Gutenberg Blocks, Patterns & Templates plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'productRating.iconColor' parameter in all versions up to, and including, 2.2.27 du…
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Medium 4.4
DesignSetGo <= 2.11.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tagName' Block Attribute
The DesignSetGo plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tagName' parameter in all versions up to, and including, 2.11.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated att…
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Medium 6.4
s2Member <= 261011 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'date_format' Shortcode Attribute
The s2Member – Excellent for All Kinds of Memberships, Content Restriction Paywalls & Member Access Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'date_format' parameter in all versions up to, and including, <= 261011…
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Medium 6.4
UiChemy <= 5.3.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Slot Link URL
The UiChemy – Convert Figma, Prompts and AI Builds to Elementor, Gutenberg and Bricks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'actions[save_builder][data][elements][...][settings][slot_{N}_link][url]' parameter in all version…
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Medium 6.4
Travelly <= 2.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'width', 'height', and 'zoom' Shortcode Attributes
The Tour Booking Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'width', 'height' and 'zoom' shortcode attributes of the [ttbm-hotel-map] shortcode in versions up to, and including, 2.3.6 This is due to insufficient input sa…
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Medium 6.4
If-So Dynamic Content <= 1.10.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via ifso-redirect Shortcode 'url' Attribute
The If-So Dynamic Content – Elementor & All Page Builders Personalization plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'url' parameter in all versions up to, and including, 1.10.2 due to insufficient input sanitization and output …
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High 7.2
MxChat <= 3.2.25 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'feedback' Parameter via mxchat_save_rating
The MxChat – AI Chatbot & Content Generation for WordPress plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'feedback' parameter in all versions up to, and including, 3.2.25 due to insufficient input sanitization and output …
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Medium 6.4
Awesome Support <= 6.4.1 - Authenticated (Custom+) Stored Cross-Site Scripting via Ticket Attachment MIME Confusion
The Awesome Support – WordPress HelpDesk & Support Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wpas_files' parameter in all versions up to, and including, 6.4.1 due to insufficient input sanitization and output escaping. …
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Medium 6.8
GeoDirectory < 2.8.196 - Contributor+ Stored XSS via gd_post_badge 'cta' Attribute
The GeoDirectory WordPress plugin before 2.8.196 does not properly escape a post badge shortcode attribute for a JavaScript context before placing it in an inline event handler, allowing users with the Contributor role and above to perform Stored Cross-Site S…
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Medium 6.8CVE-2026-111967 Public exploit
MP3 Audio Player by Sonaar 5.9 - 5.15 - Contributor+ Stored XSS via Shortcode Attribute
The MP3 Audio Player WordPress plugin before 5.16 does not escape one of its audio player shortcode attributes before outputting it into an HTML attribute, allowing users with Contributor-level access and above to inject arbitrary JavaScript that executes whe…
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Medium 6.8
GeoDirectory < 2.8.196 - Contributor+ Stored XSS via gd_post_badge 'link' Attribute
The GeoDirectory WordPress plugin before 2.8.196 does not properly sanitise or escape a post badge click-through link value before outputting it in an anchor element on a listing, allowing users with the Contributor role and above to perform Stored Cross-Site…
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High 7.1
Persian WooCommerce SMS 7.2.0 - 7.3.1 - Reflected XSS via 'pwsms_mobiles' Parameter
The افزونه پیامک ووکامرس | Persian WooCommerce SMS WordPress plugin before 7.3.2 does not sanitise and escape a parameter before reflecting it back into an HTML attribute, leading to Reflected Cross-Site Scripting that is executed in the browser session of a …
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Medium 6.8
Copy Anything to Clipboard < 5.5.5 - Contributor+ Stored XSS via 'success-text' Shortcode Attribute
The Copy Anything to Clipboard for WordPress WordPress plugin before 5.5.5 does not sanitize and escape a shortcode attribute before storing it and writing it back into the page through a client-side script, which could allow users with the contributor role a…