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 6.4
Chamilo: Stored Cross-Site Scripting (XSS) in Chamilo LMS Exercise Feedback
Chamilo is a learning management system. Prior to version 1.11.34, a stored XSS vulnerability exists in Chamilo LMS that allows a staff account to execute arbitrary JavaScript in the browser of higher-privileged admin users. The issue arises because feedback …
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Medium 6.1
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Cross-Site Scripting Vulnerability
A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XS…
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Medium 6.9
Chamilo: HTML injection via open parameter
Chamilo is a learning management system. Prior to version 1.11.30, the open parameter of help.php fails to properly sanitize user input. This allows an attacker to inject arbitrary HTML, such as underlined text, via a crafted URL. This issue has been patched …
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Medium 5.1
Chamilo: Reflected XSS via page parameter
Chamilo is a learning management system. Prior to version 1.11.30, there is a reflected cross-site scripting (XSS) vulnerability due to insufficient sanitization of the page parameter in the session/add_users_to_session.php endpoint. This issue has been patch…
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Medium 5.3
WordPress WooCommerce Photo Reviews plugin <= 1.4.4 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in villatheme WooCommerce Photo Reviews woocommerce-photo-reviews allows Code Injection.This issue affects WooCommerce Photo Reviews: from n/a through <= 1.4.4.
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Medium 6.1
Vikunja has Reflected HTML Injection via filter Parameter in Projects Module
Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, a reflected HTML injection vulnerability exists in the Projects module where the `filter` URL parameter is rendered into the DOM without output encoding when the user clic…
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Medium 5.3
WordPress XStore theme <= 9.6.4 - Arbitrary Shortcode Execution 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 <= 9.6.4.
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Medium 5.3
WordPress Everest Forms plugin <= 3.4.1 - Arbitrary Shortcode Execution vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in wpeverest Everest Forms everest-forms allows Code Injection.This issue affects Everest Forms: from n/a through <= 3.4.1.
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Medium 5.4
IBM webMethods Integration Server is vulnerable to HTML injection
IBM webMethods Integration Server 12.0 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 6.4
Bold Builder <= 5.5.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via bt_bb_tabs Shortcode
The Bold Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin 'bt_bb_tabs' shortcode in all versions up to, and including, 5.5.1 due to insufficient input sanitization and output escaping on user supplied attributes. T…
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Medium 6.1
Navidrome is vulnerable to XSS via comment from song metadata
Navidrome is an open source web-based music collection server and streamer. Prior to version 0.60.0, a cross-site scripting vulnerability in the frontend allows a malicious attacker to inject code through the comment metadata of a song to exfiltrate user cred…
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Medium 4.1
ERPNext thru 15.88.1 does not sanitize or remove certain HTML tags specifically `<a>` hyperlinks in fields that are int…
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Medium 5.4
A HTML injection vulnerability exists in the file upload functionality of Cacti <= 1.2.29. When a file with an invalid …
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Medium 6.5CVE-2026-24128 Scanner template
XWiki Affected by Reflected Cross-Site Scripting (XSS) in Error Messages
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 7.0-milestone-2 through 16.10.11, 17.0.0-rc-1 through 17.4.4, and 17.5.0-rc-1 through 17.7.0 contain a reflected Cross-site Scripting (XSS) vulne…
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Medium 4.3
WordPress Textmetrics plugin <= 3.6.5 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Israpil Textmetrics webtexttool allows Code Injection.This issue affects Textmetrics: from n/a through <= 3.6.5.
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Medium 5.3
WordPress DeepDigital theme <= 1.0.2 - Arbitrary Shortcode Execution vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in mwtemplates DeepDigital deepdigital allows Code Injection.This issue affects DeepDigital: from n/a through <= 1.0.2.
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Medium 5.3
WordPress WoodMart theme <= 8.3.7 - Arbitrary Shortcode Execution vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in xtemos WoodMart woodmart allows Code Injection.This issue affects WoodMart: from n/a through <= 8.3.7.
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Medium 5.4
Security vulnerabilities have been found in IBM Application Gateway
IBM Application Gateway 23.10 through 25.09 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 4.3
SourceCodester E-Learning System Lesson index.php cross site scripting
A flaw has been found in SourceCodester E-Learning System 1.0. This impacts an unknown function of the file /admin/modules/lesson/index.php of the component Lesson Module Handler. Executing a manipulation of the argument Title/Description can lead to basic cr…
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Medium 5.3
Dask distributed Vulnerable to Remote Code Execution via Jupyter Proxy and Dashboard
Dask distributed is a distributed task scheduler for Dask. Prior to 2026.1.0, when Jupyter Lab, jupyter-server-proxy, and Dask distributed are all run together, it is possible to craft a URL which will result in code being executed by Jupyter due to a cross-s…
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Medium 4.8
Cisco Identity Services Engine Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the …
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Medium 5.4
WordPress Easy Media Download plugin <= 1.1.11 - CSS Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Noor Alam Easy Media Download easy-media-download allows Reflection Injection.This issue affects Easy Media Download: from n/a through <= 1.1.11.
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Medium 6.4
Responsive Pricing Table <= 5.1.12 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'table_currency'
The Responsive Pricing Table plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'table_currency' parameter in all versions up to, and including, 5.1.12 due to insufficient input sanitization and output escaping. This makes it possible f…
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Medium 4.4
Key Figures <= 1.1 - Authenticated (Admin+) Stored Cross-Site Scripting via kf_field_figure_default_color_render
The Key Figures plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the kf_field_figure_default_color_render function in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping. This makes it possibl…
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Medium 6.1
Reflected XSS in go-httpbin due to unrestricted client control over Content-Type
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
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Medium 5.4
XSS in IBM Aspera Faspex
IBM Aspera Faspex 5 5.0.0 through 5.0.14.1 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 4.4
Amazon affiliate lite Plugin <= 1.0.0 - Authenticated (Administrator+) Stored Cross-Site Scripting
The "Amazon affiliate lite Plugin" plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenti…
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Medium 6.5
WordPress Stockie Extra plugin <= 1.2.11 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Stockie Extra stockie-extra allows Code Injection.This issue affects Stockie Extra: from n/a through <= 1.2.11.
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Medium 5.3
WordPress Norebro Extra plugin <= 1.6.8 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Norebro Extra norebro-extra allows Code Injection.This issue affects Norebro Extra: from n/a through <= 1.6.8.
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Medium 6.5CVE-2025-66472 Scanner template
XWiki vulnerable to a reflected XSS via xredirect parameter in DeleteApplication
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 6.2-milestone-1 through 16.10.9 and 17.0.0-rc-1 through 17.4.1 of both XWiki Platform Flamingo Skin Resources and XWiki Platform Web Templates ar…
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Medium 5.3
WordPress Contact Form 7 Dynamic Text Extension plugin <= 5.0.5 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in sevenspark Contact Form 7 – Dynamic Text Extension contact-form-7-dynamic-text-extension allows Code Injection.This issue affects Contact Form 7 – Dynamic Text Exte…
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Medium 5.4
Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a u…
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Medium 4.8
Stored XSS in Datateam's Datactive
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting'), Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Datateam Information Technologies Inc. Datactive allows Stored XSS. Thi…
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Medium 6.1
Apache SkyWalking: Stored XSS vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache SkyWalking. This issue affects Apache SkyWalking: <= 10.2.0. Users are recommended to upgrade to version 10.3.0, which fixes the issue.
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Medium 4.2
A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiADC 8.0.…
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Medium 6.4
VK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vkExUnit_cta_url' and 'vkExUnit_cta_button_text' parameters in all versions up to, and including, 9.112.1. This is due to a logic error in the CTA save…
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Medium 6.4
VK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_veu_custom_css' parameter in all versions up to, and including, 9.112.1. This is due to insufficient input sanitization and output escaping on the use…
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Medium 6.9
AVEVA Application Server IDE Basic Cross-site Scripting
The vulnerability, if exploited, could allow an authenticated miscreant (with privilege of "aaConfigTools") to tamper with App Objects' help files and persist a cross-site scripting (XSS) injection that when executed by a victim user, can result in horizontal…
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Medium 6.5
A Stored Cross Site Scripting (XSS) vulnerability was found in the Application Server of Desktop Alert PingAlert versio…
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Medium 6.4
Chart Expert <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
The Chart Expert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pmzez_chart' shortcode in all versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied shortcode attribu…