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 Easy Google Maps plugin <= 1.14.6 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Easy Google Maps <= 1.14.6 versions.
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High 7.1
WordPress Ninja Forms plugin <= 3.15.3 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Ninja Forms <= 3.15.3 versions.
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High 7.1
WordPress If-So Dynamic Content Personalization plugin <= 1.10.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in If-So Dynamic Content If-So Dynamic Content Personalization if-so allows Reflected XSS.This issue affects If-So Dynamic Content Personalization: from n/a thr…
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High 7.1
WordPress Quiz And Survey Master plugin <= 11.2.6 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ExpressTech Quiz And Survey Master quiz-master-next allows DOM-Based XSS.This issue affects Quiz And Survey Master: from n/a through 11.2.6.
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High 7.1
WordPress WPFunnels plugin <= 3.13.1 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in WPFunnels <= 3.13.1 versions.
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High 7.1
WordPress Premmerce Permalink Manager for WooCommerce plugin <= 2.3.13 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Premmerce Permalink Manager for WooCommerce <= 2.3.13 versions.
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High 7.1
WordPress LayerSlider plugin <= 8.4.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kreatura LayerSlider allows Reflected XSS. This issue affects LayerSlider: from n/a through 8.4.0.
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High 7.1
WordPress Geo Mashup plugin <= 1.13.21 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Geo Mashup <= 1.13.21 versions.
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High 7.1
WordPress JetEngine plugin <= 3.8.14.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetEngine jet-engine allows DOM-Based XSS.This issue affects JetEngine: from n/a through 3.8.14.3.
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High 7.1
WordPress ThemeREX Addons plugin < 2.45.0 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in ThemeREX Addons < 2.45.0 versions.
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High 7.1
WordPress Ad Inserter plugin <= 2.8.18 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Ad Inserter <= 2.8.18 versions.
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High 7.1
WordPress Happyforms plugin <= 1.26.15 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Happyforms <= 1.26.15 versions.
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High 7.1
WordPress Parsi Date plugin <= 6.3 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Parsi Date <= 6.3 versions.
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High 7.1
WordPress GiveWP plugin <= 4.16.9 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in GiveWP <= 4.16.9 versions.
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High 7.1
WordPress Awesome Support plugin <= 6.3.9 - Cross Site Scripting (XSS) vulnerability
Subscriber Cross Site Scripting (XSS) in Awesome Support <= 6.3.9 versions.
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High 7.1
WordPress oik plugin <= 4.15.4 - Cross Site Scripting (XSS) vulnerability
Subscriber Cross Site Scripting (XSS) in oik <= 4.15.4 versions.
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High 7.1
WordPress Trusted Shops Easy Integration for WooCommerce plugin <= 2.0.6 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Trusted Shops Easy Integration for WooCommerce <= 2.0.6 versions.
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High 7.1
WordPress WooCommerce Product Table Lite plugin <= 5.6.7 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in WooCommerce Product Table Lite <= 5.6.7 versions.
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High 7.1
WordPress YITH WooCommerce Ajax Search plugin <= 2.28.0 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in YITH WooCommerce Ajax Search <= 2.28.0 versions.
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High 7.1
WordPress Classified Listing plugin <= 6.1.3 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Classified Listing <= 6.1.3 versions.
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High 7.1
WordPress WordPress Persistent Login plugin <= 3.1.3 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in WordPress Persistent Login <= 3.1.3 versions.
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High 7.1
WordPress Site Reviews plugin <= 8.3.1 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Site Reviews <= 8.3.1 versions.
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High 7.1
WordPress WP Statistics plugin <= 14.16.13 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in WP Statistics <= 14.16.13 versions.
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High 7.1
WordPress Notification for Telegram plugin <= 3.5.2 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in Notification for Telegram <= 3.5.2 versions.
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High 7.1
WordPress JW Player for WordPress plugin <= 2.3.11 - Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in JW Player for WordPress <= 2.3.11 versions.
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High 7.1
WordPress WPFunnels plugin <= 3.13.1 - Reflected Cross Site Scripting (XSS) vulnerability
Unauthenticated Cross Site Scripting (XSS) in WPFunnels <= 3.13.1 versions.
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High 8.3
MISP Stored Cross-Site Scripting (XSS) via Unvalidated Event Graph Preview Image
MISP contains a stored cross-site script (XSS) vulnerability in the event graph preview feature. The event graph preview image field was accepted and stored without server-side validation. On the client side, the stored value was rendered into an HTML img ele…
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High 7.2CVE-2026-97347 Public exploit
Post Views Stats Counter <= 1.1.7 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header
The Post Views Stats Counter plugin for WordPress is vulnerable to Stored Cross-Site Scripting via User-Agent Header in all versions up to, and including, 1.1.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthentic…
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High 8.8
Verge3D < 4.13.1 - Unauthenticated Stored XSS via File Storage API
The Verge3D Publishing and E-Commerce WordPress plugin before 4.13.1 does not validate the contents of files uploaded through its file storage feature and serves them back with an attacker-controlled content type, allowing unauthenticated attackers to store a…
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High 7.1
WP Mobile Menu 2.7.4 - 2.8.8 - Stored XSS via CSRF
The WP Mobile Menu WordPress plugin before 2.9 does not correctly verify the nonce on its settings import, so an attacker can import arbitrary WP Mobile Menu WordPress plugin before 2.9 settings through a cross-site request in an administrator's session, and …
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High 7.5
Robin Image Optimizer 2.0.0 - 2.0.7 - Unauthenticated Stored XSS via WebP URL Delivery HTML Parser
The Robin Image Optimizer WordPress plugin before 2.0.8 does not escape values that its bundled HTML parser re-emits into element attributes when a non-default image delivery mode is enabled, allowing unauthenticated users to submit content that is stored and…
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High 8.8
All in One Files Upload for WooCommerce 2.0.3 - 2.0.16 - Unauthenticated Stored XSS via SVG Upload
The All in One Files Upload WordPress plugin before 2.0.17 adds SVG to the site's allowed upload types and does not sanitise uploaded files or verify the authenticity of its public upload requests, allowing unauthenticated users to store files containing acti…
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High 7.2
Frontend Post Submission Manager Lite <= 1.3.4 - Unauthenticated Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink)
The Frontend Post Submission Manager Lite – Frontend Posting WordPress Plugin plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via post_content Parameter (data-label DOM Sink) in all versions up to, and including, 1.3.4 due to insuf…
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High 7.5
Lantronix G520 Series Cellular Gateway Cross-site Scripting
The device's update mechanism retrieves metadata for software updates over an unencrypted HTTP connection and stores portions of that metadata for later use. A management interface subsequently returns this stored value in a JSON response, and the web interfa…
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High 8.1
JupyterLab: Cross-site scripting (XSS) in JupyterLab via notebook cells pasted from the system clipboard
JupyterLab is an extensible environment for interactive and reproducible computing, based on the Jupyter Notebook Architecture. From JupyterLab 4.5.0 until 4.5.11 and 4.6.4, from Notebook 7.5.0 until 7.6.3, and from JupyterLite Core 0.7.0 until 0.8.4, the sys…
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High 8.6
Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4
Joomla Extension - balbooa.com - Unauthenticated upload filename stored XSS in Balbooa Forms < 2.4.3.4 - The public form upload endpoint validates the uploaded file's extension and detected MIME type, but stores the attacker-supplied original multipart filena…
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High 7.1
Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3
Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however…
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High 7.1
Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3
Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The cleanAttribute method removes HTML data URIs, however injected whitespaces characters could circumvent tha…
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High 8.2
HPE OneView - Cross-site scripting vulnerability
A security vulnerability in HPE OneView may be exploited remotely to perform session hijacking, data theft or other unauthorized actions.
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High 8.2
HPE OneView - Cross-site scripting vulnerability
A potential security vulnerability in HPE OneView can be exploited to allow remote session hijacking or other unauthorized actions.