Weakness (CWE)
CWE-79: Cross-site Scripting
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
How to prevent it (8 mitigations)
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Architecture and Design
Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
Examples of libraries and frameworks that make it easier to generate properly encoded output include Microsoft's Anti-XSS library, the OWASP ESAPI Encoding module, and Apache Wicket.
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Implementation, Architecture and Design
Understand the context in which your data will be used and the encoding that will be expected. This is especially important when transmitting data between different components, or when generating outputs that can contain multiple encodings at the same time, such as web pages or multi-part mail messages. Study all expected communication protocols and data representations to determine the required encoding strategies.
For any data that will be output to another web page, especially any data that was received from external inputs, use the appropriate encoding on all non-alphanumeric characters.
Parts of the same output document may require different encodings, which will vary depending on whether the output is in the:
- HTML body
- Element attributes (such as src="XYZ")
- URIs
- JavaScript sections
- Cascading Style Sheets and style property
etc. Note that HTML Entity Encoding is only appropriate for the HTML body.
Consult the XSS Prevention Cheat Sheet [REF-724] for more details on the types of encoding and escaping that are needed.
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Architecture and Design, Implementation
Understand all the potential areas where untrusted inputs can enter your software: parameters or arguments, cookies, anything read from the network, environment variables, reverse DNS lookups, query results, request headers, URL components, e-mail, files, filenames, databases, and any external systems that provide data to the application. Remember that such inputs may be obtained indirectly through API calls.
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Architecture and Design
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
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Architecture and Design
If available, use structured mechanisms that automatically enforce the separation between data and code. These mechanisms may be able to provide the relevant quoting, encoding, and validation automatically, instead of relying on the developer to provide this capability at every point where output is generated.
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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-79
32,751 results · Feed
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High 8.3
Visual Studio Code Remote Code Execution Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Visual Studio Code allows an unauthorized attacker to execute code over a network.
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High 8.8
Visual Studio Code Remote Code Execution Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Visual Studio Code allows an unauthorized attacker to execute code over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 8.0
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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High 7.3
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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Critical 9.0
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
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Medium 6.8
Microsoft Authentication Library for JavaScript Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Authentication Library for JavaScript allows an unauthorized attacker to perform spoofing over a network.
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Medium 4.6
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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Critical 9.0
Microsoft Office SharePoint Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
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Unscored —
Web::Simple versions before 0.037 for Perl do not escape single quotes in HTML::Tags output
Web::Simple versions before 0.037 for Perl do not escape single quotes in HTML::Tags output. HTML::Tags and XML::Tags escape a plain string value by replacing only &, ", < and > with entities. A value interpolated into a single-quoted attribute, as in <a href…
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Medium 5.1
Stored Cross-Site Scripting in the Vaadin Rich Text Editor via an Unescaped Video Embed
The Vaadin Rich Text Editor exports a video embed without escaping its value, and then parses the resulting HTML into live DOM. A value crafted to break out of the href attribute therefore runs script in the viewer's browser. An attacker who can edit shared c…
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High 7.2
Avada (Fusion) Builder <= 3.16.1 - Unauthenticated Stored Cross-Site Scripting via Form Notification Dynamic-Data action_hook
The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Form Notification Dynamic-Data action_hook → Media Upload Chain (ID3 Metadata / html_attributes) in all versions up to, and including, 3.16.1 due to insufficient …
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High 7.2
ARMember Premium <= 7.8.1 - Unauthenticated Stored Cross-Site Scripting via Registration Custom Field
The ARMember Premium – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Registration Custom Field (Profile Cover) in all versions up to, and including, 7.8.…
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Medium 6.8
Zion Builder <= 3.6.17 - Author+ Stored XSS via SVG Upload
The Zion Builder WordPress plugin through 3.6.17 does not sanitize uploaded SVG files or validate their contents before storing them in a publicly accessible location and serving them from the site's own origin, allowing authenticated users with the Author ro…
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High 7.4
LimeSurvey Community Edition 7.7.0 - Stored XSS in Central Participants blocklist control
LimeSurvey Community Edition 7.7.0 contains a stored cross-site scripting vulnerability in the Central Participants Database blocklist control. An authenticated user with only global participantpanel:import permission can import a CSV participant_id containin…
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Medium 6.1
Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Visual Composer
SAP NetWeaver Visual Composer does not perform sufficient input validation and output encoding on certain request data. An unauthenticated attacker could craft a malicious link containing specially crafted input. If a victim clicks the link, the injected scri…
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Medium 6.1
CSS Injection vulnerability in SAP NetWeaver Application Server Java (Web Dynpro Java)
SAP NetWeaver Application Server Java (Web Dynpro Java) does not sufficiently validate certain request parameters used to resolve styling resources in the application. An unauthenticated attacker could craft a malicious link that, when clicked by an authentic…
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Medium 5.4
Ampache before 8.4.0 Stored XSS via Song Lyrics ID3 Tag
Ampache before 8.4.0 contains a stored cross-site scripting vulnerability that allows users with upload rights to inject script through unescaped song lyrics in LyricsView.php getLyrics() and show_lyrics.inc.php. Attackers can upload a song whose lyrics ID3 t…
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Medium 5.4
Webmin through 2.670 Stored XSS via BIND8 edit_recs.cgi ALL View
Webmin through 2.670 contains a stored cross-site scripting vulnerability in bind8/edit_recs.cgi that outputs raw DNS record values without HTML escaping in ALL view mode. Delegated zone users such as Virtualmin domain owners can store record values containin…
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Medium 6.5
WordPress WP Activity Log plugin <= 5.6.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Melapress WP Activity Log wp-security-audit-log allows Stored XSS.This issue affects WP Activity Log: from n/a through 5.6.7.
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Low 2.4
OctoPrint: Stored XSS via saved connection parameters
OctoPrint provides a web interface for controlling consumer 3D printers. From 2.0.0rc1 until 2.0.0rc7, an authenticated user can supply a crafted default port or baudrate through a connect request to the bundled Serial Connector plugin. OctoPrint persists the…
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High 7.1
WordPress JetFormBuilder plugin <= 3.6.8 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Crocoblock JetFormBuilder jetformbuilder allows Stored XSS.This issue affects JetFormBuilder: from n/a through 3.6.8.
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High 7.1
WordPress Broadcast Live Video plugin <= 7.3.14 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in VideoWhisper.com Broadcast Live Video videowhisper-live-streaming-integration allows Reflected XSS.This issue affects Broadcast Live Video: from n/a through …
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Low 2.0
In Eclipse Langium versions 3.0.0 and later, the langium-sprotty package does not HTML-escape diagnostic messages befor…
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High 7.2
XSS vulnerability in OpenText Filr
XSS Vulnerability in OpenText Filr Appliance versions upto 25.1.2 could allow an authenticated user to upload a malicious file and exercise Stored XSS attack.
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Medium 5.4
PrestaShop Performance Debug Configuration PHP Code Injection
PrestaShop contains an authenticated PHP code injection vulnerability in the back-office Performance debug-mode configuration. A back-office user with permission to modify debug settings can supply a crafted `debug_cookie_name` or `debug_cookie_value` that is…
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Medium 6.5
WordPress ShopEngine plugin <= 4.9.8 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Wpmet ShopEngine shopengine allows Stored XSS.This issue affects ShopEngine: from n/a through 4.9.8.
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Medium 5.1
Reflected XSS in WidzialniCMS
WidzialniCMS is vulnerable to Reflected XSS in the /index.php endpoint. An attacker can prepare an URL that, when opened, results in arbitrary JavaScript execution in the victim's browser, allowing e.g session cookie theft. This issue has been fixed in versio…
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High 7.1
WordPress Invoice Gateway for WooCommerce – Invoice Payment Gateway plugin <= 1.1.6 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rymera Web Co Invoice Gateway for WooCommerce – Invoice Payment Gateway invoice-gateway-for-woocommerce allows Reflected XSS.This issue affects Invoice Gatew…
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Medium 6.5
WordPress Directorist plugin <= 8.10.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpWax Directorist directorist allows Stored XSS.This issue affects Directorist: from n/a through 8.10.7.
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High 7.1
WordPress WordPress File Upload plugin <= 5.2.2 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Nickboss WordPress File Upload wp-file-upload allows Stored XSS.This issue affects WordPress File Upload: from n/a through 5.2.2.
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Medium 6.5
WordPress TI WooCommerce Wishlist plugin <= 2.14.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in TemplateInvaders TI WooCommerce Wishlist ti-woocommerce-wishlist allows Stored XSS.This issue affects TI WooCommerce Wishlist: from n/a through 2.14.0.
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High 7.1
WordPress Featured Image from URL plugin <= 6.1.4 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in fifu.app Featured Image from URL featured-image-from-url allows Stored XSS.This issue affects Featured Image from URL: from n/a through 6.1.4.
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Medium 6.5
WordPress WP Customer Area plugin <= 8.4.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Aguila Technologies WP Customer Area customer-area allows Stored XSS.This issue affects WP Customer Area: from n/a through 8.4.3.
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High 7.1
WordPress Mang Board WP plugin <= 2.4.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kitae Park Mang Board WP mangboard allows Reflected XSS.This issue affects Mang Board WP: from n/a through 2.4.7.
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Medium 6.5
WordPress Mang Board WP plugin <= 2.4.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kitae Park Mang Board WP mangboard allows Stored XSS.This issue affects Mang Board WP: from n/a through 2.4.7.