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
692 results · Feed
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Medium 5.3
WordPress Spectra – WordPress Gutenberg Blocks plugin <= 2.3.0 - Unauthenticated Email HTML Injection Vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Brainstorm Force Spectra allows Code Injection.This issue affects Spectra: from n/a through 2.3.0.
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High 7.6
Stored Cross-Site Scripting (XSS) in OpenProject
OpenProject is the leading open source project management software. OpenProject utilizes `tablesorter` inside of the Cost Report feature. This dependency, when misconfigured, can lead to Stored XSS via `{icon}` substitution in table header values. This attack…
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Medium 6.1
phpxmlrpc/extra XSS in class documenting_xmlrpc_server
Versions preceding 0.6.1 of the phpxmlrpc/extras project are susceptible to a Cross-Site Scripting (XSS) vulnerability. This vulnerability exists within the class documenting_xmlrpc_server when processing the GET methodName parameter.
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Medium 5.3
WordPress Formidable Forms plugin <= 6.7 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Form Builder Team Formidable Forms allows Code Injection.This issue affects Formidable Forms: from n/a through 6.7.
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Low 2.7
WordPress cardealer plugin <= 4.15 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS vulnerability in Bill Minozzi Car Dealer allows Code Injection.This issue affects Car Dealer: from n/a through 4.15.
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Medium 5.3
WordPress Polls CP plugin <= 1.0.71 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in CodePeople CP Polls allows Code Injection.This issue affects CP Polls: from n/a through 1.0.71.
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Medium 4.3
WordPress Pricing Table by Supsystic plugin <= 1.9.12 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Supsystic Pricing Table by Supsystic allows Code Injection.This issue affects Pricing Table by Supsystic: from n/a through 1.9.12.
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Medium 6.5
GZ::CTF allows unprivileged user can perform XSS attacks by constructing malicious team names.
GZ::CTF is a capture the flag platform. Prior to 0.20.1, unprivileged user can perform cross-site scripting attacks on other users by constructing malicious team names. This problem has been fixed in `v0.20.1`.
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Critical 9.7CVE-2024-34070 Public exploit
Froxlor Vulnerable to Blind XSS Leading to Froxlor Application Compromise
Froxlor is open source server administration software. Prior to 2.1.9, a Stored Blind Cross-Site Scripting (XSS) vulnerability was identified in the Failed Login Attempts Logging Feature of the Froxlor Application. An unauthenticated User can inject malicious…
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High 7.4
An issue was discovered in includes/CommentFormatter/CommentParser.php in MediaWiki before 1.39.7, 1.40.x before 1.40.3…
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High 7.2
WordPress Core is vulnerable to Stored Cross-Site Scripting via user display names in the Avatar block in various versi…
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Medium 5.8
Stored Cross-site Scripting in directory listings via file names in static-web-server
Static Web Server (SWS) is a tiny and fast production-ready web server suitable to serve static web files or assets. In affected versions if directory listings are enabled for a directory that an untrusted user has upload privileges for, a malicious file name…
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High 7.4
Cross-Site Scripting (XSS) vulnerability in the Settings menu of CMSimple v5.15 allows attackers to execute arbitrary w…
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High 7.4
A stored cross-site scripting (XSS) vulnerability in the Advanced Expectation - Response module of yapi v1.10.2 allows …
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Medium 5.3
WordPress JetFormBuilder plugin <= 3.1.4 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS vulnerability in Crocoblock JetFormBuilder allows Code Injection.This issue affects JetFormBuilder: from n/a through 3.1.4.
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Medium 6.1
Hugo doesn't escape markdown title in internal render hooks
Hugo is a static site generator. Starting in version 0.123.0 and prior to version 0.125.3, title arguments in Markdown for links and images not escaped in internal render hooks. Hugo users who are impacted are those who have these hooks enabled and do not tru…
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Medium 6.1
aiohttp vulnerable to XSS on index pages for static file handling
aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. A XSS vulnerability exists on index pages for static file handling. This vulnerability is fixed in 3.9.4. We have always recommended using a reverse proxy server (e.g. nginx) for …
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Medium 6.1
excalidraw vulnerable to a Stored XSS in excalidraw's web embed component
excalidraw is an open source virtual hand-drawn style whiteboard. A stored XSS vulnerability in Excalidraw's web embeddable component. This allows arbitrary JavaScript to be run in the context of the domain where the editor is hosted. There were two vectors. …
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Medium 4.6
A cross-site scripting (XSS) vulnerability in the Settings section of WonderCMS v3.4.3 allows attackers to execute arbi…
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Medium 6.8
iTop vulnerable to XSS in dashlet modifications ajax endpoints
iTop is an IT service management platform. Dashlet edits ajax endpoints can be used to produce XSS. Fixed in iTop 2.7.10, 3.0.4, and 3.1.1.
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Medium 5.7
iTop vulnerable to XSS in friendlyname in object details
iTop is an IT service management platform. By manipulating HTTP queries, a user can inject malicious content in the fields used for the object friendlyname value. This vulnerability is fixed in 3.1.1 and 3.2.0.
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Medium 6.1
TCPDF Cross-site Scripting vulnerability
TCPDF before 6.7.4 mishandles calls that use HTML syntax.
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Medium 4.6
XSS in graph rendering
Stored XSS in graph rendering in Checkmk <2.3.0b4.
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Medium 4.7
HTML injection in ArcGIS Web AppBuilder
There is an HTML injection vulnerability in Esri Portal for ArcGIS versions 11.1 and below that may allow a remote, unauthenticated attacker to create a crafted link which when clicked could render arbitrary HTML in the victim’s browser.
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Medium 6.1
A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, RV082, RV320, and R…
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Medium 6.3
Cross Site Scripting vulnerability in Insurance Mangement System v.1.0.0 and before allows a remote attacker to execute…
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Medium 4.7
phpMyFAQ Stored HTML Injection at contentLink
phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. Due to insufficient validation on the `contentLink` parameter, it is possible for unauthenticated users to inject HTML code to the page which might affect o…
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Medium 4.6
HTML injection in BMC Control-M
Lack of input sanitization in BMC Control-M branches 9.0.20 and 9.0.21 allows logged-in users for manipulation of generated web pages via injection of HTML code. This might lead to a successful phishing attack for example by tricking users into using a hyperl…
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Medium 6.3
Webedition CMS 9.2.2.0 has a Stored XSS vulnerability via /webEdition/we_cmd.php.
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Medium 6.1
hexo-theme-anzhiyu Cross-site Scripting vulnerability
Cross Site Scripting (XSS) vulnerability in hexo-theme-anzhiyu v1.6.12, allows remote attackers to execute arbitrary code via the algolia search function.
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Medium 6.1
XSS sidekiq-unique-jobs UI server vulnerability
Cross Site Scripting vulnerability in Contribsys Sidekiq v.6.5.8 allows a remote attacker to obtain sensitive information via a crafted URL to the filter functions.
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High 7.1
Using an AMP url with a canonical element, an attacker could have executed JavaScript from an opened bookmarked page. T…
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Medium 5.4
Enhavo v0.13.1 was discovered to contain an HTML injection vulnerability in the Author text field under the Blockquote …
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High 7.1
An HTML injection vulnerability exists in the Edit Content Layout module of Kirby CMS v4.1.0. NOTE: the vendor disputes…
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Medium 5.4
Frappe Authenticated Reflected Cross site scripting (XSS) in portal pages
Frappe is a full-stack web application framework that uses Python and MariaDB on the server side and a tightly integrated client side library. Prior to versions 14.59.0 and 15.5.0, portal pages are susceptible to Cross-Site Scripting (XSS) which can be used t…
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Medium 6.5
phpMyFAQ vulnerable to stored XSS on attachments filename
phpMyFAQ is an open source FAQ web application for PHP 8.1+ and MySQL, PostgreSQL and other databases. Unsafe echo of filename in phpMyFAQ\phpmyfaq\admin\attachments.php leads to allowed execution of JavaScript code in client side (XSS). This vulnerability ha…
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Low 2.7
Sulu is vulnerable to HTML Injection via Autocomplete Suggestion
Sulu is a highly extensible open-source PHP content management system based on the Symfony framework. There is an issue when inputting HTML into the Tag name. The HTML is executed when the tag name is listed in the auto complete form. Only admin users can cre…
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Medium 6.1
IBM PowerSC HTML injection
IBM PowerSC 1.3, 2.0, and 2.1 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. IBM X-Force ID: 275113.
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High 8.2
Statamic account takeover via XSS and password reset link
Statamic is a Laravel and Git powered CMS. HTML files crafted to look like jpg files are able to be uploaded, allowing for XSS. This affects the front-end forms with asset fields without any mime type validation, asset fields in the control panel, and asset b…
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Medium 5.4
facileManager Systemic Cross-Site Scripting (XSS)
facileManager is a modular suite of web apps built with the sysadmin in mind. For the facileManager web application versions 4.5.0 and earlier, we have found that XSS was present in almost all of the input fields as there is insufficient input validation.