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
98 results · Clear filters · Feed
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Low 2.1
Vite: Cross origin script execution through Vite custom middleware
Vite is a frontend tooling framework for JavaScript. Prior to 6.4.4, 7.3.7, 8.1.6, 8.2.4, and 8.3.3, applications using custom middleware are vulnerable when they pass an unchanged browser request URL to server.transformIndexHtml. getHtmlFilename uses the que…
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Low 3.5
HTML Injection in İzometri Informatics' eimzamip
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in İzometri IT Services Domestic and Foreign Trade Co. Ltd. Eimzamip allows Stored XSS. This issue affects eimzamip: from v1.6.4 before v1.6.7.
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Low 1.2CVE-2026-103585 Public exploit
attacker-controlled javascript license URL via XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki MediaSearch extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki MediaSearch extension: 1.46, 1.45, and 1.43.
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Low 1.1CVE-2026-103584 Public exploit
attacker-controlled javascript license URL via XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki CommonsMetadata extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki CommonsMetadata extension: 1.46, 1.45, …
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Low 0.3
Various rawParams() and escaped() updates to prevent XSS in Wikibase extension
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikbase extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikbase extension: 1.46, 1.45, and 1.43.
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Low 0.3
Various rawParams() and escaped() updates to prevent XSS in Wikistories extension
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Wikistories extension allows Cross-Site Scripting (XSS). This issue affects MediaWiki Wikistories extension: 1.46, 1.45, and 1.43.
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Low 1.1CVE-2026-103437 Public exploit
ReadingLists imported metadata permits JavaScript URL XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki ReadingLists extension allows Reflected XSS. This issue affects MediaWiki ReadingLists extension: 1.46 and 1.45.
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Low 1.2CVE-2026-103445 Public exploit
Stored XSS through PageForms #autoedit redirect links
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Page_Forms extension allows Stored XSS. This issue affects MediaWiki Page_Forms extension: 1.46, 1.45, and 1.43.
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Low 1.1
Stored XSS through system messages in WikiForum
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki WikiForum extension allows Stored XSS. This issue affects MediaWiki WikiForum extension: master.
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Low 1.1
API permits session-seeded javascript URL XSS
Improper neutralization of Script-Related HTML tags in a web page (basic XSS) vulnerability in The Wikimedia Foundation MediaWiki Collection (Book) extension allows XSS Targeting Non-Script Elements. This issue affects MediaWiki Collection (Book) extension: 1…
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Low 2.7
WordPress Astra WordPress theme theme <= 4.13.12 - Content Injection vulnerability
Shop manager Content Injection in Astra WordPress Theme <= 4.13.12 versions.
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Low 2.3
Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script> in serialized function bodies
Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. From 7.1.1 until 7.1.2, function values serialized by serialize-javascript are not fully protected against script-closing tags in attacker…
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Low 3.1
Laravel: XSS in Debug Page Information
Laravel is a web application framework. Prior to 12.69.0 and 13.30.0, Laravel exception debug pages with APP_DEBUG=true pass attacker-controlled input to a Tippy.js tooltip configured with allowHTML true, enabling DOM-based cross-site scripting when a user ho…
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Low 2.1
Malicious HTML content could be injected into the page pretix shows when redirection to an untrusted page occurs. Since…
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Low 2.1
Content injected to PDF rendering contexts could, in many places, include HTML content including <img> tags. If the src…
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Low 2.1
Stored XSS in pretix-pages
Malicious HTML content could be injected into the content of a page in the pretix-pages plugin.
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Low 2.0
Stored XSS in pretix-digital
Malicious HTML content could be injected into the content rendered by the pretix-digital plugin.
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Low 3.5
Radware Cyber Controller HTML Report Generation HTML injection
A security vulnerability has been detected in Radware Cyber Controller up to 10.11.0. This affects an unknown part of the component HTML Report Generation. The manipulation leads to HTML injection. Remote exploitation of the attack is possible. The exploit ha…
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Low 3.5
Bolt CMS HTML Attribute TextType.php HTML injection
A weakness has been identified in Bolt CMS up to 3.7.5. This vulnerability affects unknown code of the file src/Storage/Field/Type/TextType.php of the component HTML Attribute Handler. Executing a manipulation of the argument style can lead to HTML injection.…
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Low 1.8
The GDPR cookies module for Backdrop CMS (before 1.x-1.3.5) doesn't sufficiently protect visitors from Cross Site Scrip…
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Low 3.1
HCL DFXAnalytics is affected by an Insecure Security Header Configuration vulnerability
HCL DFXAnalytics is affected by an Insecure Security Header Configuration vulnerability where the application utilizes the outdated X-XSS-Protection header, which could allow an attacker to exploit browser-specific rendering flaws or bypass security controls …
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Low 3.1
HTML injection in the web dashboard
An attacker might be able to inject HTML content into the internal web dashboard by sending crafted DNS queries to a DNSdist instance where domain-based dynamic rules have been enabled via either DynBlockRulesGroup:setSuffixMatchRule or DynBlockRulesGroup:set…
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Low 3.5
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.6 before 18.6.6, 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an authenticated user to inject malicious content into project labels titles.
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Low 3.5
OpenProject vulnerable to Stored HTML injection
OpenProject is an open-source, web-based project management software. Prior to versions 16.6.7 and 17.0.3, an HTML injection vulnerability occurs in the time tracking function of OpenProject. The application does not escape HTML tags, an attacker with adminis…
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Low 3.5
Grandstream GXP1625 Network Status api.values.post cross site scripting
A security flaw has been discovered in Grandstream GXP1625 1.0.7.4. The impacted element is an unknown function of the file /cgi-bin/api.values.post of the component Network Status Page. Performing manipulation of the argument vpn_ip results in basic cross si…
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Low 3.5
Bdtask/CodeCanyon Wholesale Inventory Control and Inventory Management System edit_profile cross site scripting
A vulnerability was found in Bdtask/CodeCanyon Wholesale Inventory Control and Inventory Management System up to 20250320. Impacted is an unknown function of the file /edit_profile. Performing manipulation of the argument first_name/last_name results in basic…
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Low 3.5
Bdtask/CodeCanyon SalesERP User Profile edit_profile cross site scripting
A flaw has been found in Bdtask/CodeCanyon SalesERP up to 20250728. This vulnerability affects unknown code of the file /edit_profile of the component User Profile Handler. This manipulation of the argument first_name/last_name causes basic cross site scripti…
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Low 2.3
Vert.x-Web vulnerable to Stored Cross-site Scripting in directory listings via file names
In Eclipse Vert.x versions [4.0.0, 4.5.21] and [5.0.0, 5.0.4], when "directory listing" is enabled, file and directory names are inserted into generated HTML without proper escaping in the href, title, and link attributes. An attacker who can create or rename…
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Low 3.5
Discourse is vulnerable to XSS when quoting chat messages
Discourse is an open-source community discussion platform. Versions 3.5.0 and below are vulnerable to XSS attacks through parsing and rendering of chat channel titles and chat thread titles via the quote message functionality when using the rich text editor. …
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Low 3.2
Code-projects Online Class and Exam Scheduling System V1.0 is vulnerable to Cross Site Scripting (XSS) in /pages/depart…
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Low 3.5
Eastnets PaymentSafe Edit Manual Reply directRouter.rfc cross site scripting
A vulnerability, which was classified as problematic, was found in Eastnets PaymentSafe 2.5.26.0. This affects an unknown part of the file /directRouter.rfc of the component Edit Manual Reply Handler. The manipulation of the argument Title leads to basic cros…
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Low 2.0
HTML injection in CyberArk Endpoint Privilege Manager
It is possible to inject HTML code into the page content using the "content" field in the "Application definition" page. This issue affects CyberArk Endpoint Privilege Manager in SaaS version 24.7.1. The status of other versions is unknown. After multiple att…
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Low 2.3
Cross-site scripting (XSS) in the real-time collaboration package
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. During a recent internal audit, a Cross-Site Scripting (XSS) vulnerability was discovered in the CKEditor 5 real-time collaboration package. This vulnerability affects user markers, …
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Low 2.6
Dell Update Manager Plugin, version(s) 1.5.0 through 1.6.0, contain(s) an Improper Neutralization of Script-Related HTM…
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Low 2.4CVE-2024-11954 Public exploit
Pimcore Search Document cross site scripting
A vulnerability classified as problematic was found in Pimcore 11.4.2. Affected by this vulnerability is an unknown functionality of the component Search Document. The manipulation leads to basic cross site scripting. The attack can be launched remotely. The …
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Low 3.3
An improper neutralization of script-related html tags in a web page (basic xss) in Fortinet FortiPortal 6.0.0 through …
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Low 3.1
IBM DevOps Deploy / IBM UrbanCode Deploy HTML injection
IBM UrbanCode Deploy (UCD) 7.2 through 7.2.3.13, 7.3 through 7.3.2.8, and IBM DevOps Deploy 8.0 through 8.0.1.3 are vulnerable to HTML injection. This vulnerability may allow a user to embed arbitrary HTML tags in the Web UI potentially leading to sensitive i…
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Low 3.1
HCL DevOps Deploy / HCL Launch is vulnerable to HTML injection
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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Low 3.5
XSS in Special:DataDump when displaying dump status
DataDump is a MediaWiki extension that provides dumps of wikis. Several interface messages are unescaped (more specifically, (datadump-table-column-queued), (datadump-table-column-in-progress), (datadump-table-column-completed), (datadump-table-column-failed)…
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Low 2.4
ClassCMS Article admin cross site scripting
A vulnerability, which was classified as problematic, has been found in ClassCMS 4.8. Affected by this issue is some unknown functionality of the file /index.php/admin of the component Article Handler. The manipulation of the argument Title leads to basic cro…