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)
-
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.
-
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.
-
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.
-
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.
-
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.
-
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.
-
Implementation
With Struts, write all data from form beans with the bean's filter attribute set to true.
-
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
-
High 8.2
Arbitrary File Upload in Netoloji Software's E-Flow
Unrestricted Upload of File with Dangerous Type, Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Netoloji Software E-Flow allows Accessing Functionality Not Properly Constrained by ACLs, Stored XSS,…
-
High 8.6
Mobile Security Framework (MobSF) Allows Stored Cross Site Scripting (XSS) via malicious SVG Icon Upload
Mobile Security Framework (MobSF) is a security research platform for mobile applications in Android, iOS and Windows Mobile. A Stored Cross-Site Scripting (XSS) vulnerability has been identified in MobSF versions up to and including 4.3.2. The vulnerability …
-
High 7.1
HCL Domino Volt and Domino Leap are affected by a Cross-site scripting (XSS) vulnerability
Insufficient URI protocol whitelist in HCL Domino Volt and Domino Leap allow script injection through query parameters.
-
High 7.6CVE-2025-46349 Scanner template
YesWiki Vulnerable to Unauthenticated Reflected Cross-site Scripting
YesWiki is a wiki system written in PHP. Prior to version 4.5.4, YesWiki is vulnerable to reflected XSS in the file upload form. This vulnerability allows any malicious unauthenticated user to create a link that can be clicked on by the victim to perform arbi…
-
High 7.2
The TheCartPress boot-store (aka Boot Store) theme 1.6.4 for WordPress allows header.php tcp_register_error XSS. NOTE: …
-
High 7.2
Karaz Karazal through 2025-04-14 allows reflected XSS via the lang parameter to the default URI.
-
High 7.2
eForm <= 4.18.0 - Unauthenticated Stored Cross-Site Scripting
The eForm - WordPress Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 4.18.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers …
-
High 7.1
HCL Leap is affected by a Cross-site scripting (XSS) vulnerability
Insufficient URI protocol whitelist in HCL Leap allows script injection through query parameters.
-
High 7.1
WordPress WoWHead Tooltips plugin <= 2.0.1 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Novium WoWHead Tooltips wowhead-tooltips allows Stored XSS.This issue affects WoWHead Tooltips: from n/a through <= 2.0.1.
-
High 7.1
WordPress LSD Custom taxonomy and category meta plugin <= 1.3.2 - CSRF to XSS vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Bas Matthee LSD Custom taxonomy and category meta custom-taxonomy-category-and-term-fields allows Cross Site Request Forgery.This issue affects LSD Custom ta…
-
High 7.1
WordPress PayPal Express Checkout plugin <= 2.1.2 - Cross Site Request Forgery (CSRF) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in hccoder PayPal Express Checkout paypal-express-checkout allows Stored XSS.This issue affects PayPal Express Checkout: from n/a through <= 2.1.2.
-
High 7.1
WordPress Dropdown Content plugin <= 1.0.2 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in metaloha Dropdown Content dropdown-content allows Stored XSS.This issue affects Dropdown Content: from n/a through <= 1.0.2.
-
High 7.1
WordPress ACF: Google Font Selector plugin <= 3.0.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in danielpataki ACF: Google Font Selector acf-google-font-selector-field allows Reflected XSS.This issue affects ACF: Google Font Selector: from n/a through <= …
-
High 7.1
WordPress Anything Popup plugin <= 7.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in gopiplus@hotmail.com Anything Popup anything-popup allows Reflected XSS.This issue affects Anything Popup: from n/a through <= 7.3.
-
High 7.1
WordPress User Registration plugin < 4.2.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpeverest User Registration user-registration allows Reflected XSS.This issue affects User Registration: from n/a through < 4.2.0.
-
High 7.1
WordPress BruteGuard – Brute Force Login Protection plugin <= 0.1.4 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in EverPress BruteGuard – Brute Force Login Protection bruteguard allows Reflected XSS.This issue affects BruteGuard – Brute Force Login Protection: from n/a th…
-
High 7.1
WordPress Control Listings plugin <= 1.0.4.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Habibur Rahman Razib Control Listings control-listings allows Reflected XSS.This issue affects Control Listings: from n/a through <= 1.0.4.1.
-
High 8.8
Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability
Arista NG Firewall User-Agent Cross-Site Scripting Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Arista NG Firewall. Minimal user interaction is required to exploit this …
-
High 7.2
Debug Log Manager <= 2.3.4 - Unauthenticated Stored Cross-Site Scripting
The Debug Log Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the auto-refresh debug log in all versions up to, and including, 2.3.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthent…
-
High 7.1
WordPress Modal Survey plugin <= 2.0.2.0.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in pantherius Modal Survey modal-survey.This issue affects Modal Survey: from n/a through <= 2.0.2.0.1.
-
High 8.6
XSS in TP-Link TL-WR841N v14/v14.6/v14.8 Upnp page
A stored cross-site scripting (XSS) vulnerability in the upnp.htm page of the web Interface in TP-Link WR841N v14/v14.6/v14.8 <= Build 241230 Rel. 50788n allows remote attackers to inject arbitrary JavaScript code via the port mapping description. This leads …
-
High 8.6
Markdown math block sanitization bypass allows privilege escalation and unauthorized workflow triggers
An improper neutralization of input vulnerability was identified in GitHub Enterprise Server that allowed cross-site scripting in GitHub Markdown that used `$$..$$` math blocks. Exploitation required access to the target GitHub Enterprise Server instance and …
-
High 7.1
WordPress Author Showcase plugin <= 1.4.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Claire Ryan Author Showcase author-showcase allows Reflected XSS.This issue affects Author Showcase: from n/a through <= 1.4.3.
-
High 7.1
WordPress visualslider Sldier plugin <= 1.1.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dastan800 visualslider Sldier visual-slider allows Reflected XSS.This issue affects visualslider Sldier: from n/a through <= 1.1.1.
-
High 7.1
WordPress TotalContest Lite Plugin <= 2.8.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in TotalSuite TotalContest Lite totalcontest-lite allows Reflected XSS.This issue affects TotalContest Lite: from n/a through <= 2.8.1.
-
High 7.1
WordPress SpiderDisplay plugin <= 1.9.1 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fyljp SpiderDisplay spiderdisplay allows Reflected XSS.This issue affects SpiderDisplay: from n/a through <= 1.9.1.
-
High 7.1
WordPress Custom Users Order Plugin <= 4.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Hiren Patel Custom Users Order custom-users-order allows Reflected XSS.This issue affects Custom Users Order: from n/a through <= 4.2.
-
High 7.1
WordPress DeBounce Email Validator plugin <= 5.6.5 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in debounce DeBounce Email Validator debounce-io-email-validator allows Reflected XSS.This issue affects DeBounce Email Validator: from n/a through <= 5.6.5.
-
High 7.1
WordPress Autoglot – Automatic WordPress Translation plugin <=2.4.7 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Autoglot Autoglot – Automatic WordPress Translation autoglot allows Reflected XSS.This issue affects Autoglot – Automatic WordPress Translation: from n/a thr…
-
High 7.1
WordPress Shipping with Venipak for WooCommerce plugin <= 1.22.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Akadrama Shipping with Venipak for WooCommerce wc-venipak-shipping allows Reflected XSS.This issue affects Shipping with Venipak for WooCommerce: from n/a th…
-
High 7.1
WordPress Shipment Tracker for Woocommerce plugin <= 1.4.23 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in bitsstech Shipment Tracker for Woocommerce shipment-tracker-for-woocommerce allows Reflected XSS.This issue affects Shipment Tracker for Woocommerce: from n/…
-
High 7.1
WordPress WP Log Action Plugin <= 0.51 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in webheadcoder WP Log Action wp-log-action allows Reflected XSS.This issue affects WP Log Action: from n/a through <= 0.51.
-
High 7.1
WordPress Arconix Shortcodes plugin <= 2.1.15 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in tychesoftwares Arconix Shortcodes arconix-shortcodes allows Reflected XSS.This issue affects Arconix Shortcodes: from n/a through <= 2.1.15.
-
High 7.1
WordPress Beacon Lead Magnets and Lead Capture Plugin <= 1.5.7 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Syed Balkhi Beacon Lead Magnets and Lead Capture beacon-by allows Reflected XSS.This issue affects Beacon Lead Magnets and Lead Capture: from n/a through <= …
-
High 7.1
WordPress HT Event – WordPress Event Manager Plugin for Elementor Plugin <= 1.4.6 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in DevItems HT Event ht-event allows Reflected XSS.This issue affects HT Event: from n/a through <= 1.4.6.
-
High 7.1
WordPress Empty Tags Remover Plugin <= 1.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Dan-Lucian Stefancu Empty Tags Remover empty-tags-remover allows Reflected XSS.This issue affects Empty Tags Remover: from n/a through <= 1.0.
-
High 7.1
WordPress Eazy Under Construction Plugin <= 1.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rob Scott Eazy Under Construction eazy-under-construction allows Reflected XSS.This issue affects Eazy Under Construction: from n/a through <= 1.0.
-
High 7.1
WordPress Wishlist Plugin <= 1.0.39 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in PickPlugins Wishlist wishlist allows Reflected XSS.This issue affects Wishlist: from n/a through <= 1.0.39.
-
High 7.1
WordPress Term Taxonomy Converter Plugin <= 1.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Dhanendran Rajagopal Term Taxonomy Converter term-taxonomy-converter allows Reflected XSS.This issue affects Term Taxonomy Converter: from n/a through <= 1.2.
-
High 7.1CVE-2025-24752 Public exploit
WordPress Essential Addons for Elementor plugin <= 6.0.14 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPDeveloper Essential Addons for Elementor essential-addons-for-elementor-lite allows Reflected XSS.This issue affects Essential Addons for Elementor: from n…