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
32,780 results · Feed
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Medium 6.1
Affected devices do not properly sanitize calculated signal names contained in imported CSV trace files before includin…
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Medium 6.1
Affected devices do not properly sanitize signal names contained in imported CSV trace files before rendering them in s…
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Critical 9.6
Affected devices do not properly validate and sanitize visual marker data contained in imported CSV trace files before …
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Critical 9.6
Affected devices do not properly sanitize comment fields contained in imported trace files before rendering them on the…
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Medium 6.1
Affected devices do not properly sanitize calculated signal data contained in imported CSV trace files before rendering…
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Medium 6.1
Affected devices do not properly validate and sanitize visual properties of calculated signals contained in imported CS…
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Medium 6.5
WordPress Books Gallery plugin <= 4.8.4 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Hossni Mubarak Books Gallery wp-books-gallery allows Stored XSS.This issue affects Books Gallery: from n/a through 4.8.4.
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Medium 6.5
WordPress User Registration plugin <= 5.2.8 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ThemeGrill User Registration user-registration allows Stored XSS.This issue affects User Registration: from n/a through 5.2.8.
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Medium 6.5
WordPress SureCart plugin <= 4.9.4 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Brainstorm Force SureCart surecart allows Stored XSS.This issue affects SureCart: from n/a through 4.9.4.
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Medium 5.1
Cross-Site Scripting in the YouMind web application
Cross-Site Scripting on the YouMind portal, specifically in the avatar update endpoint, when setting a profile picture via an arbitrary URL. This occurs due to a lack of sanitisation and validation of SVG content when setting an SVG image containing embedded …
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Medium 6.5
WordPress Prime Slider – Addons For Elementor plugin <= 4.7.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BdThemes Prime Slider – Addons For Elementor bdthemes-prime-slider-lite allows Stored XSS.This issue affects Prime Slider – Addons For Elementor: from n/a th…
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Medium 6.5
WordPress PowerPack Addons for Elementor plugin <= 3.1.0 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in IdeaBox Creations PowerPack Addons for Elementor powerpack-lite-for-elementor allows Stored XSS.This issue affects PowerPack Addons for Elementor: from n/a t…
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Medium 6.5
WordPress Premium Addons for Elementor plugin <= 4.11.110 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in LeapWorx Premium Addons for Elementor premium-addons-for-elementor allows Stored XSS.This issue affects Premium Addons for Elementor: from n/a through 4.11.1…
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Medium 6.5
WordPress SureForms plugin <= 2.12.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Brainstorm Force SureForms sureforms allows Stored XSS.This issue affects SureForms: from n/a through 2.12.7.
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High 7.2
Bit integrations <= 2.10.6 - Unauthenticated Stored Cross-Site Scripting via 'notification_content' Field via Public Bit Assist Webhook Callback
The Bit integrations – Form Integration, Webhook, Spreadsheets, CRM, LMS & Email Automation plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'field mapped to notification_content (attacker-chosen key, e.g. payload_text)' parameter in …
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High 7.2
AcyMailing <= 11.1.0 - Unauthenticated Stored Cross-Site Scripting via 'customField[]' Parameter
The AcyMailing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customField[] parameter of the public frontusers::subscribe endpoint in versions up to, and including, 11.1.0. This is due to insufficient input sanitization and output e…
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Medium 5.4
HCL Connections is vulnerable to cross-site scripting (XSS)
HCL Connections is vulnerable to a cross-site scripting attack where an attacker may leverage this issue to execute arbitrary script code in the browser of an unsuspecting user which leads to executing malicious script code. This may allow the attacker steal …
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High 8.8
Universal XSS via the HTML language attribute in Translation Services
Firefox for iOS directly interpolated the page’s HTML language attribute into translation JavaScript, allowing attacker-controlled markup to execute code in Firefox’s privileged content world and bypass the page’s Content Security Policy. This vulnerability w…
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Medium 6.8
WP Testimonials <= 1.4.13 - Author+ Stored XSS via wp-testimonials Shortcode
The WP Testimonials WordPress plugin through 1.4.13 does not properly escape testimonial content and reverses WordPress's HTML sanitization when rendering it, allowing users with the Author role and above to store JavaScript that executes in the session of an…
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Medium 6.5
WordPress Responsive Slider plugin <= 0.1.9 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Griden Responsive Slider responsive-slider allows Stored XSS.This issue affects Responsive Slider: from n/a through 0.1.9.
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Medium 6.5
WordPress FV Simpler SEO plugin <= 1.9.7 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in FolioVision FV Simpler SEO fv-all-in-one-seo-pack allows Stored XSS.This issue affects FV Simpler SEO: from n/a through 1.9.7.
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Medium 6.5
WordPress IMPress for IDX Broker plugin <= 3.3.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in IDX Broker IMPress for IDX Broker idx-broker-platinum allows Stored XSS.This issue affects IMPress for IDX Broker: from n/a through 3.3.1.
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Medium 6.5
WordPress Weaver Xtreme theme Support plugin <= 7.0.1 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wpweaver Weaver Xtreme Theme Support weaverx-theme-support allows Stored XSS.This issue affects Weaver Xtreme Theme Support: from n/a through 7.0.1.
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High 8.7
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to execute arbitrary JavaScript in the context o…
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Medium 6.1
Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Enterprise Portal
SAP NetWeaver Enterprise Portal allows an unauthenticated attacker to inject malicious scripts into a URL parameter. The scripts are reflected in the server response and executed in a user's browser when the crafted URL is visited, leading to theft of session…
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Medium 5.4
Cross-Site Scripting (XSS) vulnerability in SAP NetWeaver Application Server ABAP (Applications based on SAP GUI for HTML)
Applications based on SAP GUI for HTML in SAP NetWeaver Application Server ABAP do not sufficiently sanitize user-supplied content in certain functionality, allowing an authenticated attacker to send malicious content to another user. If the victim interacts …
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Medium 6.1
Cross-Site Scripting (XSS) vulnerability in SAPUI5 (Support Assistant Overlay)
Due to a DOM-Based Cross-Site Scripting (XSS) vulnerability, an unauthenticated attacker could generate a malicious link and make it publicly accessible. If an authenticated user accesses this link, client-side code reads the attacker-controlled input and wri…
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Medium 6.5
Cross-Site Scripting (XSS) vulnerability in SAP Manufacturing Integration and Intelligence
Due to a Cross-Site Scripting (XSS) vulnerability in SAP Manufacturing Integration and Intelligence, an attacker could store malicious content that is later rendered by the application. If an authenticated victim accesses a page that displays this stored cont…
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Low 3.5
philz1337x clarity-upscaler Extra Networks Card Rendering ui_extra_networks.py create_html_for_item cross site scripting
A security flaw has been discovered in philz1337x clarity-upscaler up to cfbdb842c6c839c8e97741722b8cf9a4b7662d98. This impacts the function create_html_for_item of the file modules/ui_extra_networks.py of the component Extra Networks Card Rendering. The mani…
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Medium 6.1
ProPhoenix Law RMS v2022.2403.3.101 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via …
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Medium 6.1
ProPhoenix Law RMS v2022.2403.3.101 was discovered to contain a reflected cross-site scripting (XSS) vulnerability via …
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Medium 5.4CVE-2026-104587 Public exploit
blob42 gosuki through commit 6e2bf34 contains a Stored Cross-Site Scripting (XSS) vulnerability. The application uses t…
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High 8.3
IBM i is Affected By An Improper Neutralization of Input Vulnerability in HTTP Server Administration GUI
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute arbitrary script code due to improper validation of user-supplied input.
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Medium 6.4
IBM Planning Analytics Local is affected by security vulnerabilities
IBM Planning Analytics 2.0, and 2.1 is vulnerable to stored cross-site scripting. This vulnerability allows an authenticated user to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disc…
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Medium 5.4
IBM Planning Analytics Local is affected by security vulnerabilities
IBM Planning Analytics 2.0, and 2.1 could allow a remote authenticated attacker to execute arbitrary JavaScript due to improper output encoding.
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Low 2.4
Edimax BR-6208AC QoS Page formQoS cross site scripting
A security vulnerability has been detected in Edimax BR-6208AC 1.32. This affects an unknown part of the file /goform/formQoS of the component QoS Page. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. The exploi…
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High 7.3
Frappe ERPNext before 16.12.0 Stored XSS via Crafted Record Names
Frappe ERPNext before 15.103.0 and 16.x before 16.12.0 contains a stored cross-site scripting vulnerability because the names of certain records are not properly neutralized when rendered on some dashboards, tools, and portals. Authenticated attackers can cra…
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High 7.3
Frappe ERPNext before 15.113.0 Stored XSS via Profile Field in Portal Pages
Frappe ERPNext before 15.113.0 and 16.x before 16.24.0 contains a stored cross-site scripting vulnerability in a profile field that is rendered without escaping into portal pages. Low-privilege attackers can store malicious script in the field that executes i…
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Medium 5.4
Frappe ERPNext before 15.110.0 Stored XSS via Item Record Name
Frappe ERPNext before 15.110.0 and 16.x before 16.21.0 contains a stored cross-site scripting vulnerability caused by record names being rendered without escaping. Attackers with write access to item master data can store malicious script in a record name tha…
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Medium 6.1
Frappe ERPNext before 15.112.0 Stored XSS via Public Portal Form
Frappe ERPNext before 15.112.0 and 16.x before 16.23.0 contains a stored cross-site scripting vulnerability in a public portal form that accepts unauthenticated submissions and stores content later rendered with insufficient neutralisation. Unauthenticated at…