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
2,694 results · Clear filters · Feed
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Low 3.4
Cross-Site Scripting (XSS) Vulnerability in mintplex-labs/anything-llm
A Cross-Site Scripting (XSS) vulnerability exists in mintplex-labs/anything-llm, affecting both the desktop application version 1.2.0 and the latest version of the web application. The vulnerability arises from the application's feature to fetch and embed con…
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Low 3.4
Stored XSS in zenml-io/zenml
A stored Cross-Site Scripting (XSS) vulnerability was identified in the zenml-io/zenml repository, specifically within the 'logo_url' field. By injecting malicious payloads into this field, an attacker could send harmful messages to other users, potentially c…
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Low 3.6
Arbitrary JavaScript execution due to using outdated libraries
### Summary gradio-pdf projects with dependencies on the pdf.js library are vulnerable to CVE-2024-4367, which allows arbitrary JavaScript execution. ### PoC 1. Generate a pdf file with a malicious script in the fontmatrix. (This will run `alert(‘XSS’)`.) [po…
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Low 3.5
SourceCodester Simple Online Bidding System save_category cross site scripting
A vulnerability was found in SourceCodester Simple Online Bidding System 1.0. It has been classified as problematic. Affected is the function save_category of the file /admin/index.php?page=categories. The manipulation of the argument name leads to cross site…
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Low 2.7
Stored Cross-site Scripting on Components of Umbraco Forms
Umbraco Commerce is an open source dotnet web forms solution. In affected versions an authenticated user that has access to edit Forms may inject unsafe code into Forms components. This issue can be mitigated by configuring TitleAndDescription:AllowUnsafeHtml…
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Low 2.4
Stored XSS Vulnerability
Zoho ManageEngine ServiceDesk Plus versions below 14730, ServiceDesk Plus MSP below 14720 and SupportCenter Plus below 14720 are vulnerable to stored XSS in the Custom Actions menu on the request details. This vulnerability can be exploited only by the SDAdmi…
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Low 2.4
oretnom23 Online Car Wash Booking System cross site scripting
A vulnerability, which was classified as problematic, has been found in oretnom23 Online Car Wash Booking System 1.0. This issue affects some unknown processing of the file /admin/?page=user/list. The manipulation of the argument First Name/Last Name with the…
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Low 3.5
lakernote EasyAdmin upload cross site scripting
A vulnerability classified as problematic has been found in lakernote EasyAdmin up to 20240324. This affects an unknown part of the file /sys/file/upload. The manipulation of the argument file leads to cross site scripting. It is possible to initiate the atta…
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Low 3.5
jsy-1 short-url admin.php cross site scripting
A vulnerability classified as problematic has been found in jsy-1 short-url 1.0.0. Affected is an unknown function of the file admin.php. The manipulation of the argument url leads to cross site scripting. It is possible to launch the attack remotely. Upgradi…
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Low 3.5
JFinalCMS template cross site scripting
A vulnerability was found in JFinalCMS up to 20240111. It has been rated as problematic. This issue affects some unknown processing of the file /admin/template. The manipulation of the argument directory leads to cross site scripting. The attack may be initia…
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Low 3.5
Kashipara College Management System view_each_faculty.php cross site scripting
A vulnerability was found in Kashipara College Management System 1.0 and classified as problematic. Affected by this issue is some unknown functionality of the file view_each_faculty.php. The manipulation of the argument id leads to cross site scripting. The …
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Low 3.5
Kashipara College Management System submit_student.php cross site scripting
A vulnerability has been found in Kashipara College Management System 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file submit_student.php. The manipulation of the argument address leads to cross site sc…
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Low 3.5
Kashipara College Management System submit_new_faculty.php cross site scripting
A vulnerability, which was classified as problematic, was found in Kashipara College Management System 1.0. Affected is an unknown function of the file submit_new_faculty.php. The manipulation of the argument address leads to cross site scripting. It is possi…
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Low 3.5
Kashipara College Management System submit_login.php cross site scripting
A vulnerability, which was classified as problematic, has been found in Kashipara College Management System 1.0. This issue affects some unknown processing of the file submit_login.php. The manipulation of the argument usertype leads to cross site scripting. …
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Low 3.5
Kashipara College Management System submit_extracurricular_activity.php cross site scripting
A vulnerability classified as problematic was found in Kashipara College Management System 1.0. This vulnerability affects unknown code of the file submit_extracurricular_activity.php. The manipulation of the argument activity_contact leads to cross site scri…
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Low 3.5
Kashipara College Management System submit_enroll_student.php cross site scripting
A vulnerability classified as problematic has been found in Kashipara College Management System 1.0. This affects an unknown part of the file submit_enroll_student.php. The manipulation of the argument class_name leads to cross site scripting. It is possible …
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Low 3.5
Kashipara College Management System submit_enroll_staff.php cross site scripting
A vulnerability was found in Kashipara College Management System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file submit_enroll_staff.php. The manipulation of the argument class_name leads to cross site s…
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Low 3.5
Kashipara College Management System submit_admin.php cross site scripting
A vulnerability was found in Kashipara College Management System 1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file submit_admin.php. The manipulation of the argument admin_name leads to cross site…
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Low 3.5
Kashipara College Management System delete_faculty.php cross site scripting
A vulnerability was found in Kashipara College Management System 1.0. It has been classified as problematic. Affected is an unknown function of the file delete_faculty.php. The manipulation of the argument id leads to cross site scripting. It is possible to l…
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Low 3.5
Kashipara College Management System each_extracurricula_activities.php cross site scripting
A vulnerability was found in Kashipara College Management System 1.0 and classified as problematic. This issue affects some unknown processing of the file each_extracurricula_activities.php. The manipulation of the argument id leads to cross site scripting. T…
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Low 2.4
JFinalCMS content cross site scripting
A vulnerability classified as problematic has been found in JFinalCMS up to 20221020. This affects an unknown part of the file /admin/content. The manipulation of the argument Title leads to cross site scripting. It is possible to initiate the attack remotely…
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Low 2.4
zzdevelop lenosp Adduser Page cross site scripting
** DISPUTED ** A vulnerability was found in zzdevelop lenosp up to 20230831. It has been classified as problematic. This affects an unknown part of the component Adduser Page. The manipulation of the argument username with the input <script>alert(1)</script> …
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Low 2.4
FastCMS New Article Tab cross site scripting
A vulnerability was found in FastCMS up to 0.1.5 and classified as problematic. Affected by this issue is some unknown functionality of the component New Article Tab. The manipulation of the argument Title leads to cross site scripting. The attack may be laun…
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Low 3.5
xuliangzhan vxe-table vxe-textarea textarea.js export cross site scripting
A vulnerability, which was classified as problematic, has been found in xuliangzhan vxe-table up to 3.7.9. This issue affects the function export of the file packages/textarea/src/textarea.js of the component vxe-textarea. The manipulation of the argument inp…
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Low 3.5
Qiwen Netdisk File Rename cross site scripting
A vulnerability was found in Qiwen Netdisk up to 1.4.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component File Rename Handler. The manipulation with the input <img src="" onerror="alert(document.c…
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Low 3.8
Silverstripe admin XSS Vulnerability via WYSIWYG editor
It is possible for a bad actor with access to the CMS to make use of onmouseover or onmouseout attributes in the WYSIWYG editor to embed malicious javascript.
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Low 2.4
PHPGurukul Directory Management System Searchbar admin-profile.php cross site scripting
A vulnerability classified as problematic was found in PHPGurukul Directory Management System 1.0. Affected by this vulnerability is an unknown functionality of the file /admin/admin-profile.php of the component Searchbar. The manipulation leads to cross site…
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Low 2.4
PHPGurukul Directory Management System search-directory.php. cross site scripting
A vulnerability classified as problematic has been found in PHPGurukul Directory Management System 1.0. Affected is an unknown function of the file /admin/search-directory.php.. The manipulation leads to cross site scripting. It is possible to launch the atta…
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Low 3.5
SourceCodester Event Registration System cross site scripting
A vulnerability was found in SourceCodester Event Registration System 1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /registrar/?page=registration. The manipulation of the argument e leads to c…
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Low 3.5
In JetBrains TeamCity between 2024.03 and 2024.03.1 several stored XSS in the available updates page were possible
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Low 3.5
code-projects Simple Chat System Message cross site scripting
A vulnerability, which was classified as problematic, has been found in code-projects Simple Chat System 1.0. This issue affects some unknown processing of the component Message Handler. The manipulation leads to cross site scripting. The attack may be initia…
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Low 3.5
code-projects Simple Chat System register.php cross site scripting
A vulnerability, which was classified as problematic, was found in code-projects Simple Chat System 1.0. Affected is an unknown function of the file /register.php. The manipulation of the argument name leads to cross site scripting. It is possible to launch t…
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Low 3.5
SourceCodester Interactive Map with Marker Add Marker Marker Name cross site scripting
A vulnerability was found in SourceCodester Interactive Map with Marker 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file Marker Name of the component Add Marker. The manipulation leads to cross site scrip…
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Low 3.5
SourceCodester Simple Image Stack Website cross site scripting
A vulnerability, which was classified as problematic, was found in SourceCodester Simple Image Stack Website 1.0. This affects an unknown part. The manipulation of the argument page leads to cross site scripting. It is possible to initiate the attack remotely…
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Low 3.5
TYPO3 vulnerable to an HTML Injection in the History Module
TYPO3 is an enterprise content management system. Starting in version 13.0.0 and prior to version 13.1.1, the history backend module is vulnerable to HTML injection. Although Content-Security-Policy headers effectively prevent JavaScript execution, adversarie…
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Low 3.5
Client-side script execution vulnerability in SAP UI5(PDFViewer)
PDFViewer is a control delivered as part of SAPUI5 product which shows the PDF content in an embedded mode by default. If a PDF document contains embedded JavaScript (or any harmful client-side script), the PDFViewer will execute the JavaScript embedded in th…
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Low 3.1
GoCD vulnerable to reflected Cross-site Scripting possible on server loading page during start-up
GoCD is a continuous delivery server. GoCD versions from 19.4.0 to 23.5.0 (inclusive) are potentially vulnerable to a reflected cross-site scripting vulnerability on the loading page displayed while GoCD is starting, via abuse of a `redirect_to` query paramet…
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Low 3.5
Campcodes Online Laundry Management System ajax.php cross site scripting
A vulnerability was found in Campcodes Online Laundry Management System 1.0. It has been declared as problematic. This vulnerability affects unknown code of the file /ajax.php. The manipulation of the argument name/customer_name/username leads to cross site s…
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Low 3.5
Campcodes Legal Case Management System cross site scripting
A vulnerability was found in Campcodes Legal Case Management System 1.0. It has been declared as problematic. This vulnerability affects unknown code. The manipulation of the argument new_client leads to cross site scripting. The attack can be initiated remot…
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Low 3.5
Campcodes Legal Case Management System vendor cross site scripting
A vulnerability was found in Campcodes Legal Case Management System 1.0. It has been classified as problematic. This affects an unknown part of the file /admin/vendor. The manipulation of the argument company_name/mobile leads to cross site scripting. It is p…