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
937 results · Clear filters · Feed
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Medium 6.1CVE-2024-41358 Public exploit
phpipam 1.6 is vulnerable to Cross Site Scripting (XSS) via app\admin\import-export\import-load-data.php.
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Medium 6.4CVE-2024-43788 Public exploit
DOM Clobbering Gadget found in Webpack's AutoPublicPathRuntimeModule that leads to Cross-site Scripting (XSS)
Webpack is a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset. The webpack developers have discovered a DOM Clobbering vulner…
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Medium 4.8CVE-2022-39996 Public exploit
Cross Site Scripting vulnerability in Teldats Router RS123, RS123w allows attacker to execute arbitrary code via the cm…
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Critical 9.8CVE-2024-45265 Public exploit
A SQL injection vulnerability in the poll component in SkySystem Arfa-CMS before 5.1.3124 allows remote attackers to ex…
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Medium 4.8CVE-2024-40111 Public exploit
A persistent (stored) cross-site scripting (XSS) vulnerability has been identified in Automad 2.0.0-alpha.4. This vulne…
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High 7.6CVE-2024-35540 Public exploit
A stored cross-site scripting (XSS) vulnerability in Typecho v1.3.0 allows attackers to execute arbitrary web scripts o…
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Critical 9.1CVE-2024-43400 Public exploit
XWiki Platform allows XSS through XClass name in string properties
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. It is possible for a user without Script or Programming rights to craft a URL pointing to a page with arbitrary JavaScript. This requires social engineer …
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Medium 6.1CVE-2024-23729 Public exploit
The ColorOS Internet Browser com.heytap.browser application 45.10.3.4.1 for Android allows a remote attacker to execute…
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Medium 6.4CVE-2024-7703 Public exploit
ARMember – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup <= 4.0.37 - Authenticated (Subscriber+) Stored Cross-Site Scripting via SVG File Upload
The ARMember – Membership Plugin, Content Restriction, Member Levels, User Profile & User signup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG File uploads in all versions up to, and including, 4.0.37 due to insufficient input sani…
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Medium 5.4CVE-2024-42758 Public exploit
A Cross-site Scripting (XSS) vulnerability exists in version v2024-01-05 of the indexmenu plugin when is used and enabl…
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Low 2.4CVE-2024-7815 Public exploit
CodeAstro Online Railway Reservation System Update Employee Page admin-update-employee.php cross site scripting
A vulnerability has been found in CodeAstro Online Railway Reservation System 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/admin-update-employee.php of the component Update Employee Page. The…
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Critical 9.3
A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.…
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Critical 9.3
A Cross-Site Scripting vulnerability in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to ste…
KEV Jun 9, 2025 -
Critical 9.1CVE-2024-41947 Public exploit
XWiki Platform XSS through conflict resolution
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. By creating a conflict when another user with more rights is currently editing a page, it is possible to execute JavaScript snippets on the side of the ot…
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Medium 6.1CVE-2024-41640 Public exploit
Cross Site Scripting (XSS) vulnerability in AML Surety Eco up to 3.5 allows an attacker to run arbitrary code via craft…
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High 7.1CVE-2024-41357 Public exploit
phpipam 1.6 is vulnerable to Cross Site Scripting (XSS) via /app/admin/powerDNS/record-edit.php.
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High 8.6CVE-2024-41662 Public exploit
VNote vulnerable to Markdown XSS, which leads to RCE
VNote is a note-taking platform. A Cross-Site Scripting (XSS) vulnerability has been identified in the Markdown rendering functionality of versions 3.18.1 and prior of the VNote note-taking application. This vulnerability allows the injection and execution of…
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Medium 4.8CVE-2024-6783 Public exploit
Vue client-side XSS via prototype pollution
A vulnerability has been discovered in Vue, that allows an attacker to perform XSS via prototype pollution. The attacker could change the prototype chain of some properties such as `Object.prototype.staticClass` or `Object.prototype.staticStyle` to execute ar…
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Medium 5.4
Calibre-Web Cross Site Scripting (XSS)
In janeczku Calibre-Web 0.6.0 to 0.6.21, the edit_book_comments function is vulnerable to Cross Site Scripting (XSS) due to improper sanitization performed by the clean_string function. The vulnerability arises from the way the clean_string function handles H…
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High 7.1CVE-2024-40492 Public exploit
Cross Site Scripting vulnerability in Heartbeat Chat v.15.2.1 allows a remote attacker to execute arbitrary code via th…
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Medium 6.4CVE-2024-6485 Public exploit
XSS in Bootstrap button component
A security vulnerability has been discovered in bootstrap that could enable Cross-Site Scripting (XSS) attacks. The vulnerability is associated with the data-loading-text attribute within the button plugin. This vulnerability can be exploited by injecting mal…
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Medium 5.4CVE-2024-39031 Public exploit
Silverpeas Core Cross-site Scripting vulnerability
In Silverpeas Core <= 6.3.5, in Mes Agendas, a user can create new events and add them to their calendar. Additionally, users can invite others from the same domain, including administrators, to these events. A standard user can inject an XSS payload into the…
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Medium 5.0CVE-2024-23998 Public exploit
goanother Another Redis Desktop Manager =<1.6.1 is vulnerable to Cross Site Scripting (XSS) via src/components/Setting.…
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Medium 6.1CVE-2024-23997 Public exploit
Lukas Bach yana =<1.0.16 is vulnerable to Cross Site Scripting (XSS) via src/electron-main.ts.
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Medium 5.4CVE-2024-39248 Public exploit
A cross-site scripting (XSS) vulnerability in SimpCMS v0.1 allows attackers to execute arbitrary web scripts or HTML vi…
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Medium 5.4CVE-2024-39143 Public exploit
A stored cross-site scripting (XSS) vulnerability exists in ResidenceCMS 2.10.1 that allows a low-privilege user to cre…
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Medium 5.3CVE-2024-6050 Public exploit
Reflected XSS in SOWA OPAC
Improper Neutralization of Input During Web Page Generation vulnerability in SOKRATES-software SOWA OPAC allows a Reflected Cross-Site Scripting (XSS). An attacker might trick somebody into using a crafted URL, which will cause a script to be run in user's br…
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Medium 5.4CVE-2024-37763 Public exploit
MachForm up to version 19 is affected by an unauthenticated stored cross-site scripting which affects users with valid …
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Medium 5.4CVE-2024-37764 Public exploit
MachForm up to version 19 is affected by an authenticated stored cross-site scripting.
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Medium 6.3CVE-2024-5737 Public exploit
HTML Injection in AdmirorFrames Joomla! Extension
Script afGdStream.php in AdmirorFrames Joomla! extension doesn’t specify a content type and as a result default (text/html) is used. An attacker may embed HTML tags directly in image data which is rendered by a webpage as HTML. This issue affects AdmirorFrame…
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Medium 6.1CVE-2024-21520 Public exploit
Cross-site Scripting in djangorestframework
Versions of the package djangorestframework before 3.15.2 are vulnerable to Cross-site Scripting (XSS) via the break_long_headers template filter due to improper input sanitization before splitting and joining with <br> tags.
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Medium 6.1CVE-2024-34312 Public exploit
Virtual Programming Lab for Moodle up to v4.2.3 was discovered to contain a cross-site scripting (XSS) vulnerability vi…
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Medium 6.1CVE-2024-34452 Public exploit
CMSimple_XH 1.7.6 allows XSS by uploading a crafted SVG document.
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Medium 6.5CVE-2023-27636 Public exploit
Progress Sitefinity before 15.0.0 allows XSS by authenticated users via the content form in the SF Editor.
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Medium 6.1CVE-2024-37888 Public exploit
The Open Link CKEditor plugin has a cross-site scripting (XSS) vulnerability in open link functionality
The Open Link is a CKEditor plugin, extending context menu with a possibility to open link in a new tab. The vulnerability allowed to execute JavaScript code by abusing link href attribute. It affects all users using the Open Link plugin at version < **1.0.5*…
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Medium 5.3CVE-2024-5961 Public exploit
Reflected XSS in 2ClickPortal
Improper neutralization of input during web page generation vulnerability in 2ClickPortal software allows reflected cross-site scripting (XSS). An attacker might trick somebody into using a crafted URL, which will cause a script to be run in user's browser. T…
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Medium 6.1
Roundcube Webmail before 1.5.7 and 1.6.x before 1.6.7 allows XSS via SVG animate attributes.
KEV Oct 24, 2024 -
High 8.3
Stored Cross-Site Scripting in SEH Computertechnik utnserver Pro
Missing input validation in the SEH Computertechnik utnserver Pro, SEH Computertechnik utnserver ProMAX, SEH Computertechnik INU-100 web-interface allows stored Cross-Site Scripting (XSS)..This issue affects utnserver Pro, utnserver ProMAX, INU-100 version 20…
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Medium 4.8CVE-2024-34241 Public exploit
A cross-site scripting (XSS) vulnerability in Rocketsoft Rocket LMS 1.9 allows an administrator to store a JavaScript p…
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Medium 6.1CVE-2024-34582 Public exploit
Sunhillo SureLine through 8.10.0 on RICI 5000 devices allows cgi/usrPasswd.cgi userid_change XSS within the Forgot Pass…