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
6,268 results · Clear filters · Feed
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High 7.1
WordPress Backwp plugin <= 2.0.2 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in wphobby Backwp backwp allows Reflected XSS.This issue affects Backwp: from n/a through <= 2.0.2.
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High 7.1
WordPress Evangelische Termine plugin <= 3.3 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in regibaer Evangelische Termine evangtermine allows Reflected XSS.This issue affects Evangelische Termine: from n/a through <= 3.3.
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High 7.1
WordPress WP Front User Submit / Front Editor plugin <= 4.9.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in aharonyan WP Front User Submit / Front Editor front-editor allows Reflected XSS.This issue affects WP Front User Submit / Front Editor: from n/a through <= 4…
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High 7.1
WordPress Woocommerce Line Notify plugin <= 1.1.7 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in iamapinan Woocommerce Line Notify woo-line-notify allows Stored XSS.This issue affects Woocommerce Line Notify: from n/a through <= 1.1.7.
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High 7.1
WordPress Seven Stars theme <= 1.4.4 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in themeton Seven Stars allows Stored XSS. This issue affects Seven Stars: from n/a through 1.4.4.
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High 7.1
WordPress HYDRO theme <= 2.8 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BuddhaThemes HYDRO hydro allows Reflected XSS.This issue affects HYDRO: from n/a through <= 2.8.
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High 7.1
WordPress Smart Notification Plugin <= 10.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in smartiolabs Smart Notification allows Reflected XSS. This issue affects Smart Notification: from n/a through 10.3.
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High 7.1
WordPress MagOne theme <= 8.8 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Sneeit MagOne magone allows Reflected XSS.This issue affects MagOne: from n/a through <= 8.8.
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High 7.1
WordPress FormLift for Infusionsoft Web Forms plugin <= 7.5.20 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Adrian Tobey FormLift for Infusionsoft Web Forms formlift allows Reflected XSS.This issue affects FormLift for Infusionsoft Web Forms: from n/a through <= 7.…
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High 7.1
WordPress School Management System Plugin <= 92.0.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in mojoomla School Management allows Reflected XSS. This issue affects School Management: from n/a through 92.0.0.
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High 7.1
WordPress Eventin plugin <= 4.0.28 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Arraytics Eventin wp-event-solution allows Reflected XSS.This issue affects Eventin: from n/a through <= 4.0.28.
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High 7.1
WordPress Off-Canvas Sidebars & Menus (Slidebars) plugin <= 0.5.8.4 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Jory Hogeveen Off-Canvas Sidebars & Menus (Slidebars) off-canvas-sidebars allows Reflected XSS.This issue affects Off-Canvas Sidebars & Menus (Slidebars): fr…
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High 7.1
WordPress Flexo Counter plugin <= 1.0001 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in flexostudio Flexo Counter flexo-countdown allows Reflected XSS.This issue affects Flexo Counter: from n/a through <= 1.0001.
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High 7.1
WordPress CSS3 Vertical Web Pricing Tables plugin <= 1.9 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in QuanticaLabs CSS3 Vertical Web Pricing Tables css3_vertical_web_pricing_tables allows Reflected XSS.This issue affects CSS3 Vertical Web Pricing Tables: from…
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High 7.1
WordPress xili-dictionary plugin <= 2.12.5.2 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Michel - xiligroup dev xili-dictionary xili-dictionary allows Reflected XSS.This issue affects xili-dictionary: from n/a through <= 2.12.5.2.
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High 7.1
WordPress Infility Global plugin <= 2.15.06 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Infility Infility Global infility-global allows Reflected XSS.This issue affects Infility Global: from n/a through <= 2.15.06.
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High 7.1
WordPress LMS theme <= 9.2 - Reflected Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in designthemes LMS lms allows Reflected XSS.This issue affects LMS: from n/a through <= 9.2.
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High 7.1
WordPress SpecFit-Virtual Try On Woocommerce plugin <= 8.0.3 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in dugudlabs SpecFit-Virtual Try On Woocommerce try-on-for-woocommerce allows Stored XSS.This issue affects SpecFit-Virtual Try On Woocommerce: from n/a through…
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High 7.1
WordPress Bulk YouTube Post Creator plugin <= 1.0 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Syed Tahir Ali Jan Bulk YouTube Post Creator bulk-youtube-post-creator allows Reflected XSS.This issue affects Bulk YouTube Post Creator: from n/a through <=…
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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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High 8.1
Stored XSS
Zohocorp ManageEngine Exchange reporter Plus version 5722 and below are vulnerable to Stored XSS in the Attachments by filename keyword report.
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High 8.1
Stored XSS
Zohocorp ManageEngine Exchange reporter Plus version 5722 and below are vulnerable to Stored XSS in the Folder-wise read mails with subject report.
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High 7.2
Ultra Addons for Contact Form 7 3.5.11 - 3.5.19 - Unauthenticated Stored Cross-Site Scripting via Database module
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the Database module in versions 3.5.11 to 3.5.19 due to insufficient input sanitization and output escaping. The unfiltered field names are stored alongs…
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High 8.8
Parsons AccuWeather Widget Cross-site Scripting
A cross-site scripting vulnerability exists in the AccuWeather and Custom RSS widget that allows an unauthenticated user to replace the RSS feed URL with a malicious one.
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High 8.1CVE-2025-48954 Scanner template
Discourse vulnerable to XSS via user-provided query parameter in oauth failure flow
Discourse is an open-source discussion platform. Versions prior to 3.5.0.beta6 are vulnerable to cross-site scripting when the content security policy isn't enabled when using social logins. Version 3.5.0.beta6 patches the issue. As a workaround, have the con…
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High 7.1
A cross-site scripting (XSS) vulnerability in the component /Login.php of c3crm up to v3.0.4 allows attackers to execut…
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High 7.1
Cross-Site Scripting (XSS) vulnerability in CADClick v1.13.0 and before allows remote attackers to inject arbitrary web…
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High 7.1
Netbox Community 4.1.7 is vulnerable to Cross Site Scripting (XSS) via the maintenance banner` in maintenance mode.
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High 7.1
A vulnerability in the legacy chat component of Mitel MiContact Center Business through 10.0.0.4, 10.1.0.0 through 10.1…
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High 7.0
ChangeDetection.io XSS in watch overview
changedetection.io is a free open source web page change detection, website watcher, restock monitor and notification service. Prior to version 0.50.4, errors in filters from website page change detection watches were not being filtered resulting in a cross-s…
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High 8.8
Visionatrix Vulnerable to Reflected XSS Leading to Exfiltration of Secrets
Visionatrix is an AI Media processing tool using ComfyUI. In versions 1.5.0 to before 2.5.1, the /docs/flows endpoint is vulnerable to a Reflected XSS (Cross-Site Scripting) attack allowing full takeover of the application and exfiltration of secrets stored i…
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High 8.7
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
An issue has been discovered in GitLab EE that allows for cross-site-scripting attack and content security policy bypass in a user's browser under specific conditions, affecting all versions from 16.6 before 17.9.7, 17.10 before 17.10.5, and 17.11 before 17.1…
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High 7.1
WordPress Elessi theme <= 6.3.9 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NasaTheme Elessi elessi-theme allows Reflected XSS.This issue affects Elessi: from n/a through <= 6.3.9.
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High 7.1
WordPress Scroll UP plugin <= 2.0 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in King Rayhan Scroll UP scroll-to-up allows Reflected XSS.This issue affects Scroll UP: from n/a through <= 2.0.
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High 8.1
Real Estate Management 1.0 is vulnerable to Cross Site Scripting (XSS) in /store/index.php.
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High 7.1
WordPress eForm - WordPress Form Builder < 4.19.1 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPQuark eForm - WordPress Form Builder wp-fsqm-pro allows Reflected XSS.This issue affects eForm - WordPress Form Builder: from n/a through < 4.19.1.
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High 7.1
WordPress Elite Video Player plugin <= 10.0.5 - Cross Site Scripting (XSS) Vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in _CreativeMedia_ Elite Video Player elite-video-player allows Stored XSS.This issue affects Elite Video Player: from n/a through <= 10.0.5.
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High 7.1
WordPress Nasa Core Plugin <= 6.4.4 - Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in NasaTheme Nasa Core nasa-core allows Reflected XSS.This issue affects Nasa Core: from n/a through <= 6.4.4.
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High 7.1
WordPress Track, Analyze & Optimize by WP Tao plugin <= 1.3 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Michal Jaworski Track, Analyze & Optimize by WP Tao wp-tao allows Reflected XSS.This issue affects Track, Analyze & Optimize by WP Tao: from n/a through <= 1…
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High 7.1
WordPress Ultimate Reviews plugin <= 3.2.14 - Reflected Cross Site Scripting (XSS) vulnerability
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Rustaurius Ultimate Reviews ultimate-reviews allows Reflected XSS.This issue affects Ultimate Reviews: from n/a through <= 3.2.14.