Weakness (CWE)
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.
How to prevent it (4 mitigations)
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Implementation
Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
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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-80
426 results · Clear filters · Feed
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Medium 5.4
Slippy Slider – Responsive Touch Navigation Slider <= 2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Slippy Slider – Responsive Touch Navigation Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'slippy-slider' shortcode in all versions up to, and including, 2.0 due to insufficient input sanitization and output esc…
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Medium 4.6
OctoPrint is vulnerable to XSS through Action Command Notifications and Prompts
OctoPrint provides a web interface for controlling consumer 3D printers. Versions 1.11.3 and below are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Action Command notifications and prompts popups generated by the pri…
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Medium 5.4
IBM OpenPages Vulnerable to HTML Injection
IBM OpenPages 9.1, and 9.0 with Watson is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
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Medium 6.5
WordPress Easy Appointments plugin <= 3.12.14 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Easy Appointments Easy Appointments easy-appointments allows Code Injection.This issue affects Easy Appointments: from n/a through <= 3.12.14.
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Medium 6.4
Ad Inserter <= 2.8.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom field through the plugin's 'adinserter' shortcode in all versions up to, and including, 2.8.7 due to insufficient input sanitization and ou…
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Medium 6.4
Visual Link Preview <= 2.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via visual-link-preview Shortcode
The Visual Link Preview plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's visual-link-preview shortcode in versions up to, and including, 2.2.7 due to insufficient input sanitization and output escaping on user supplied attrib…
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Medium 5.3
Galette is vulnerable to XSS through Document Type
Galette is a membership management web application for non profit organizations. In versions 1.1.5.2 and below, Galette's Document Type is vulnerable to Cross-site Scripting. This issue is fixed in version 1.2.0.
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Medium 5.8
PrivateBin persistent HTML injection in attachment filename enables redirect and defacement
PrivateBin is an online pastebin where the server has zero knowledge of pasted data. Versions 1.7.7 through 2.0.1 allow persistent HTML injection via the unsanitized attachment filename (attachment_name) when attachments are enabled. An attacker can modify at…
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Medium 5.4
HTML Injection Vulnerability in a Specific URL Endpoint of the IBM OpenPages Application
IBM OpenPages 9.1 and 9.0 is vulnerable to HTML injection. A remotely authenticated attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
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Medium 4.3
WordPress xSmart theme <= 1.2.9.4 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Jthemes xSmart xsmart allows Code Injection.This issue affects xSmart: from n/a through <= 1.2.9.4.
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Medium 5.3
WordPress WP Recipe Maker plugin < 10.1.0 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Brecht WP Recipe Maker wp-recipe-maker allows Code Injection.This issue affects WP Recipe Maker: from n/a through < 10.1.0.
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Medium 6.4
ShopLentor – WooCommerce Builder for Elementor & Gutenberg +21 Modules – All in One Solution <= 3.2.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
The ShopLentor – WooCommerce Builder for Elementor & Gutenberg +21 Modules – All in One Solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'button_exist_text' parameter in the 'wishsuite_button' shortcode in all versions up to,…
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Medium 6.1
Multi Item Responsive Slider <= 1.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting
The Multi Item Responsive Slider plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation on the 'mioptions.php' page. This makes it possible for unauthent…
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Medium 6.3
WordPress Doctreat theme <= 1.6.7 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in AmentoTech Doctreat doctreat allows Code Injection.This issue affects Doctreat: from n/a through <= 1.6.7.
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Medium 6.9
bagisto - Cross Site Scripting (XSS) in TinyMCE Image Upload (HTML)
Bagisto is an open source laravel eCommerce platform. In Bagisto v2.3.7, the TinyMCE image upload functionality allows an attacker with sufficient privileges (e.g. admin) to upload a crafted HTML file containing embedded JavaScript. When viewed, the malicious…
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Medium 6.9
bagisto - Cross Site Scripting (XSS) in TinyMCE Image Upload (SVG)
Bagisto is an open source laravel eCommerce platform. In Bagisto v2.3.7, the TinyMCE image upload functionality allows an attacker with sufficient privileges (e.g. admin) to upload a crafted SVG file containing embedded JavaScript. When viewed, the malicious …
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Medium 6.9
bagisto - Cross Site Scripting (XSS) in Create New Customer
Bagisto is an open source laravel eCommerce platform. In Bagisto v2.3.7, the “Create New Customer” feature (in the admin panel) is vulnerable to Cross-Site Scripting (XSS). An attacker with access to the admin create-customer form can inject malicious JavaScr…
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Medium 6.5
HCL BigFix Mobile is affected by an insecure Content Security Policy (CSP)
HCL BigFix Mobile 3.3 and earlier are vulnerable to certain insecure directives within the Content Security Policy (CSP). An attacker could trick users into performing actions by not properly restricting the sources of scripts and other content.
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Medium 6.5
HCL BigFix Modern Client Management (MCM) is affected by an insecure Content Security Policy (CSP)
HCL BigFix Modern Client Management (MCM) 3.3 and earlier are vulnerable to certain insecure directives within the Content Security Policy (CSP). An attacker could trick users into performing actions by not properly restricting the sources of scripts and othe…
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Medium 6.4
WPBakery Page Builder <= 8.6.1 - Stored Cross-Site Scripting via Custom JS Module
The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Custom JS module in all versions up to, and including, 8.6.1. This is due to insufficient input sanitization and output escaping of user-supplied JavaScript co…
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Medium 6.4
WPBakery Page Builder <= 8.6.1 - Stored Cross-Site Scripting via vc_custom_heading Shortcode
The WPBakery Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the vc_custom_heading shortcode in all versions up to, and including, 8.6.1. This is due to insufficient restriction of allowed HTML tags and improper sanitization…
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Medium 4.6
HCL MaxAI Assistant is susceptible to a HTML injection vulnerability
HCL Unica MaxAI Assistant is susceptible to a HTML injection vulnerability. An attacker could insert special characters that are processed client-side in the context of the user's session.
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Medium 4.6
HCL MyXalytics is affected by an HTML Injection
HCL MyXalytics v6.6 is affected by an HTML Injection. This issue occurs when untrusted input is included in the output without proper handling, potentially allowing unauthorized content injection and manipulation.
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Medium 6.4
Yoast SEO Premium 25.7-25.9 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Yoast SEO Premium plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions 25.7 to 25.9 due to a flawed regex used to remove an attribute in post content, which can be abused to inject arbitrary HTML attributes, including JavaScript e…
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Medium 4.3
TS3 Manager is vulnerable to unauthenticated reflected XSS attack due to insecure error handling
TS3 Manager is modern web interface for maintaining Teamspeak3 servers. A reflected cross-site scripting vulnerability has been identified in versions 2.2.1 and earlier. The vulnerability exists in the error handling mechanism of the login page, where malicio…
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Medium 6.4
Eulerpool Research Systems <= 4.0.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Eulerpool Research Systems plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'aaq' shortcode in all versions up to, and including, 4.0.1 due to insufficient input sanitization and output escaping on user supplied attribute…
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Medium 5.3
WordPress XStore theme < 9.6 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in 8theme XStore xstore allows Code Injection.This issue affects XStore: from n/a through < 9.6.
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Medium 5.3
WordPress Cozy Blocks Plugin <= 2.1.29 - Content Injection Vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in CozyThemes Cozy Blocks cozy-addons allows Code Injection.This issue affects Cozy Blocks: from n/a through <= 2.1.29.
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Medium 5.3
WordPress AWP Classifieds plugin <= 4.4.3 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Team AWP Classifieds another-wordpress-classifieds-plugin allows Code Injection.This issue affects AWP Classifieds: from n/a through <= 4.4.3.
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Medium 6.4
Memberlite Shortcodes <= 1.4 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Memberlite Shortcodes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugins's 'row' shortcode in all versions up to, and including, 1.4 due to insufficient input sanitization and output escaping on user supplied attributes. Thi…
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Medium 5.4
Cisco Integrated Management Controller Virtual Keyboard Video Monitor (vKVM) Stored Cross-Site Scripting Vulnerability
A vulnerability in the Virtual Keyboard Video Monitor (vKVM) connection handling of Cisco Integrated Management Controller (IMC) could allow an authenticated, remote attacker with low privileges to conduct a stored cross-site scripting (XSS) attack against a …
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Medium 4.7
WordPress Automatic Plugin - AI content generator and auto poster plugin <= 3.118.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting
The WordPress Automatic Plugin plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.118.0. This is due to missing or incorrect nonce validation on one of its functions. This makes it possible for unauthentic…
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Medium 5.2
In JetBrains IntelliJ IDEA before 2025.2 hTML injection was possible via Remote Development feature
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Medium 5.3
Apache Superset: Stored XSS on charts metadata
A stored Cross-Site Scripting (XSS) vulnerability exists in Apache Superset's chart visualization. An authenticated user with permissions to edit charts can inject a malicious payload into a column's label. The payload is not properly sanitized and gets execu…
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Medium 5.4
WordPress Classified Listing Plugin plugin <= 5.0.0 - Content Injection Vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in RadiusTheme Classified Listing classified-listing allows Code Injection.This issue affects Classified Listing: from n/a through <= 5.0.0.
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Medium 6.4
Mosaic Generator <= 1.0.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'c' Parameter
The Mosaic Generator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘c’ parameter in all versions up to, and including, 1.0.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attac…
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Medium 5.4
Cisco Identity Services Engine Stored Cross-Site Scripting Vulnerabiliy
A vulnerability in the web-based management interface of Cisco ISE and Cisco ISE-PIC could allow an authenticated, remote attacker to conduct a stored XSS attack against a user of the interface. This vulnerability is due to insufficient validation of user-sup…
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Medium 5.1
Files is Vulnerable to Reflected Self-XSS through its File Move Functionality
Files is a module for managing files inside spaces and user profiles. In versions 0.16.9 and below, the File Move functionality does not contain logic that prevents injection of arbitrary JavaScript, which can lead to Browser JS code execution in the context …
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Medium 6.3
copyparty Reflected XSS via Filter Parameter
Copyparty is a portable file server. In versions 1.18.6 and below, when accessing the recent uploads page at `/?ru`, users can filter the results using an input field at the top. This field appends a filter parameter to the URL, which reflects its value direc…
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Medium 6.5
GLPI is vulnerable to XSS and open redirection attacks through planning feature
GLPI is a Free Asset and IT Management Software package. In versions 9.1.0 through 10.0.18, an unauthenticated user can send a malicious link to attempt a phishing attack from the planning feature. This is fixed in version 10.0.19.