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
691 results · Feed
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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.
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Medium 4.5
GLPI is susceptible to Stored XSS attack through project's kanban
GLPI is a Free Asset and IT Management Software package, Data center management, ITIL Service Desk, licenses tracking and software auditing. In versions 9.5.0 through 10.0.18, a technician can use a malicious payload to trigger a stored XSS on the project's k…
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Medium 5.4
IBM Informix Dynamic Server HTML injection
IBM Informix Dynamic Server 12.10 and 14.10 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 5.1
Anubis accepts crafted redirect URLs in pass-challenge 'Try Again' buttons
Anubis is a Web AI Firewall Utility that weighs the soul of users' connections using one or more challenges in order to protect upstream resources from scraper bots. In versions 1.21.2 and below, attackers can craft malicious pass-challenge pages that cause a…
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High 8.1
javascript: URLs executed on object and embed tags
Thunderbird executed `javascript:` URLs when used in `object` and `embed` tags. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.
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Critical 9.1
XWiki Rendering is vulnerable to XSS attacks through insecure XHTML syntax
XWiki Rendering is a generic rendering system that converts textual input in a given syntax (wiki syntax, HTML, etc) into another syntax (XHTML, etc). Starting in version 5.4.5 and prior to version 14.10, the XHTML syntax depended on the `xdom+xml/current` sy…
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Medium 4.1
HTML Injection vulnerability in SAP BusinessObjects Business Intelligence Platform (Web Intelligence)
SAP�BusinessObjects Business�Intelligence Platform (Web Intelligence) is vulnerable to HTML Injection, allowing an attacker with basic user privileges to inject malicious code into specific input fields. This could lead to unintended redirects or manipulation…
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Medium 4.6
WordPress Frontend File Manager plugin <= 23.6 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in N-Media Frontend File Manager nmedia-user-file-uploader allows Code Injection.This issue affects Frontend File Manager: from n/a through <= 23.6.
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Medium 5.4
IBM Cloud Pak System HTML injection
IBM Cloud Pak System 2.3.3.6, 2.3.36 iFix1, 2.3.3.7, 2.3.3.7 iFix1, 2.3.4.0, 2.3.4.1, and 2.3.4.1 iFix1 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 withi…
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High 8.6
TabberNeue vulnerable to Stored XSS through wikitext
TabberNeue is a MediaWiki extension that allows the wiki to create tabs. Starting in version 3.0.0 and prior to version 3.1.1, any user can insert arbitrary HTMLinto the DOM by inserting a payload into any allowed attribute of the `<tabber>` tag. Version 3.1.…
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Medium 5.4
IBM Cloud Pak System HTML injection
IBM Cloud Pak System 2.3.5.0, 2.3.3.7, 2.3.3.7 iFix1 on Power and 2.3.3.6, 2.3.3.6 iFix1, 2.3.3.6 iFix2, 2.3.4.0, 2.3.4.1 on Intel operating systems is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would …
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High 7.6
File Browser has Stored Cross-Site Scripting vulnerability
File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. The Markdown preview function of File Browser prior to v2.33.7 is vulnerable to Stored Cross-Site-Scripting (XSS…
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Medium 6.4
Download Manager <= 3.3.18 - Authenticated (Author+) Stored Cross-site Scripting via wpdm_user_dashboard Shortcode
The Download Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wpdm_user_dashboard shortcode in all versions up to, and including, 3.3.18 due to insufficient input sanitization and output escaping on user supplied attr…
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High 8.7CVE-2025-4278 EPSS 11%
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab
An issue has been discovered in GitLab CE/EE affecting all versions starting with 18.0 before 18.0.2. Under certain conditions html injection in new search page could lead to account takeover.
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High 8.5
Hax CMS Stored Cross-Site Scripting vulnerability
HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, the application does not sufficiently sanitize user input, allowing for the execution of arbitrary JavaScript code. The 'saveNode' and 'saveManifest' endp…
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Medium 6.4
Paged Gallery <= 0.7 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Paged Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'gallery' shortcode in all versions up to, and including, 0.7 due to insufficient input sanitization and output escaping on user supplied attributes. This mak…
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Medium 5.5
Froxlor has an HTML Injection Vulnerability
Froxlor is open source server administration software. Prior to version 2.2.6, an HTML Injection vulnerability in the customer account portal allows an attacker to inject malicious HTML payloads in the email section. This can lead to phishing attacks, credent…
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Medium 5.2
Reflected XSS in spacewalk-java
A Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in spacewalk-java allows execution of arbitrary Javascript code on users machines.This issue affects Container suse/manager/5.0/x86_64/server:5.0.4.7.19.1: from ? b…
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Medium 5.2
Reflected XSS in SystemsController.java in spacewalk-java
A Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in spacewalk-java allows execution of arbitrary Javascript code on target systems.This issue affects Container suse/manager/5.0/x86_64/server:5.0.4.7.19.1: from ? be…
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Medium 5.4
IBM Aspera Faspex HTML injection
IBM Aspera Faspex 5.0.0 through 5.0.12 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 4.8
Cisco Identity Services Stored Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the interface. This vulnerability is due to insufficien…
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Medium 5.4
IBM Content Navigator HTML injection
IBM Content Navigator 3.0.11, 3.0.15, and 3.1.0 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 6.4CVE-2025-4126 Public exploit
EG-Series <= 2.1.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
The EG-Series plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [series] shortcode in all versions up to, and including, 2.1.1 due to insufficient input sanitization and output escaping on user supplied attributes in the short…
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Medium 6.4
Subpage List <= 1.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Subpage List plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'subpages' shortcode in all versions up to, and including, 1.3.3 due to insufficient input sanitization and output escaping on user supplied attributes. This m…
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Medium 6.4
Team Members – Best WordPress Team Plugin with Team Slider, Team Showcase & Team Builder <= 3.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Team Members – Best WordPress Team Plugin with Team Slider, Team Showcase & Team Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Social Link icons in all versions up to, and including, 3.4.1 due to insufficient input sanitiza…
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Medium 6.5
WordPress Html5 Audio Player plugin <= 2.2.28 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in bPlugins Html5 Audio Player html5-audio-player allows Stored XSS.This issue affects Html5 Audio Player: from n/a through <= 2.2.28.
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Medium 6.1
Yii does not prevent XSS in scenarios where fallback error renderer is used
Yii is an open source PHP web framework. Prior to 1.1.31, yiisoft/yii is vulnerable to Reflected XSS in specific scenarios where the fallback error renderer is used. Upgrade yiisoft/yii to version 1.1.31 or higher.
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Medium 4.3
WordPress Tutor LMS plugin <= 3.4.0 - HTML Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Themeum Tutor LMS tutor.This issue affects Tutor LMS: from n/a through <= 3.4.0.
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High 7.1
WordPress Videos plugin <= 1.0.5 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Aviplugins Videos allows Reflected XSS.This issue affects Videos: from n/a through 1.0.5.
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Medium 5.4
HCL DevOps Deploy / HCL Launch is susceptible to an HTML injection vulnerability
HCL DevOps Deploy / HCL Launch is vulnerable to HTML injection. This vulnerability may allow a user to embed arbitrary HTML tags in the Web UI potentially leading to sensitive information disclosure.
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Medium 6.1CVE-2025-30676 EPSS 68%
Apache OFBiz: Stored XSS Vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache OFBiz. This issue affects Apache OFBiz: before 18.12.19. Users are recommended to upgrade to version 18.12.19, which fixes the issue.
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High 8.7
Bruno XSS On Environment Name
Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment name) as raw HTML which then gets injected into DOM on hover.…
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High 8.4CVE-2025-30161 EPSS 11%
OpenEMR Stored XSS in OpenEMR Bronchitis Form
OpenEMR is a free and open source electronic health records and medical practice management application. A stored XSS vulnerability in the Bronchitis form component of OpenEMR allows anyone who is able to edit a bronchitis form to steal credentials from admin…
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Medium 6.5
WordPress Cal.com plugin <= 1.0.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Cal.com Cal.com cal-com allows Stored XSS.This issue affects Cal.com: from n/a through <= 1.0.0.
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Medium 5.9
WordPress Flag Icons plugin <= 2.2 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Vasilis Triantafyllou Flag Icons language-icons-flags-switcher allows Stored XSS.This issue affects Flag Icons: from n/a through <= 2.2.
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High 7.1
WordPress Improve My City plugin <= 1.6 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Improve My City Improve My City improve-my-city allows Reflected XSS.This issue affects Improve My City: from n/a through <= 1.6.