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 3.5
code-projects Employee Record System current_employees.php cross site scripting
A vulnerability, which was classified as problematic, was found in code-projects Employee Record System 1.0. This affects an unknown part of the file current_employees.php. The manipulation of the argument employeed_id/first_name/middle_name/last_name leads t…
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Low 3.5
code-projects Employee Record System edit_employee.php cross site scripting
A vulnerability, which was classified as problematic, has been found in code-projects Employee Record System 1.0. Affected by this issue is some unknown functionality of the file dashboard\edit_employee.php. The manipulation of the argument employeed_id/first…
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Low 2.1
DumbDrop vulnerable to DOM XSS via file upload
DumbDrop, a file upload application that provides an interface for dragging and dropping files, has a DOM cross-site scripting vulnerability in the upload functionality prior to commit db27b25372eb9071e63583d8faed2111a2b79f1b. A user could be tricked into upl…
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Low 1.9
Emlog vulnerable to Stored Cross-site Scripting
Emlog is an open source website building system. Version 2.5.13 has a stored cross-site scripting vulnerability that allows any registered user to construct malicious JavaScript, inducing all website users to click. In `/admin/comment.php`, the parameter `per…
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Low 2.7
PAN-OS: Reflected Cross-Site Scripting (XSS) Vulnerability in GlobalProtect Gateway and Portal
A reflected cross-site scripting (XSS) vulnerability in the GlobalProtect™ gateway and portal features of Palo Alto Networks PAN-OS® software enables execution of malicious JavaScript in the context of an authenticated Captive Portal user's browser when they …
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Low 1.3
Kanboard has stored Cross-site Scripting vulnerability in project name
Kanboard is project management software that focuses on the Kanban methodology. Versions 1.2.26 through 1.2.44 have a Stored Cross-Site Scripting (XSS) Vulnerability in the `name` parameter of the `http://localhost/?controller=ProjectCreationController&action…
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Low 2.1
phpDVDProfiler Cross-site Scripting vulnerability
julmud/phpDVDProfiler is an adoption of the defunct phpDVDProfiler project, which allows users to display on the web their DVD collections maintained with Invelos's DVDProfiler software. Starting in v_20230807 and prior to v_20250511, cross-site scripting in …
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Low 3.5
ContiNew Admin file cross site scripting
A vulnerability, which was classified as problematic, was found in ContiNew Admin up to 3.6.0. Affected is an unknown function of the file /dev-api/common/file. The manipulation of the argument File leads to cross site scripting. It is possible to launch the …
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Low 2.4
SourceCodester Web-based Pharmacy Product Management System Add User Page cross site scripting
A vulnerability was found in SourceCodester Web-based Pharmacy Product Management System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the component Add User Page. The manipulation leads to cross site scripting…
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Low 3.5
JAdmin-JAVA JAdmin save cross site scripting
A vulnerability has been found in JAdmin-JAVA JAdmin 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /memoAjax/save. The manipulation of the argument ID leads to cross site scripting. The attack can be…
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Low 2.4
SourceCodester Online Student Clearance System add-student.php cross site scripting
A vulnerability classified as problematic was found in SourceCodester Online Student Clearance System 1.0. Affected by this vulnerability is an unknown functionality of the file /admin/add-student.php. The manipulation of the argument Fullname leads to cross …
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Low 2.4
SourceCodester Online Student Clearance System add-admin.php cross site scripting
A vulnerability classified as problematic has been found in SourceCodester Online Student Clearance System 1.0. Affected is an unknown function of the file /admin/add-admin.php. The manipulation of the argument txtusername/txtfullname/txtpassword/txtpassword2…
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Low 2.4
TOTOLINK N150RT Virtual Server Page cross site scripting
A vulnerability classified as problematic was found in TOTOLINK N150RT 3.4.0-B20190525. This vulnerability affects unknown code of the component Virtual Server Page. The manipulation leads to cross site scripting. The attack can be initiated remotely. The exp…
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Low 2.4
TOTOLINK N150RT URL Filtering Page cross site scripting
A vulnerability classified as problematic has been found in TOTOLINK N150RT 3.4.0-B20190525. This affects an unknown part of the component URL Filtering Page. The manipulation leads to cross site scripting. It is possible to initiate the attack remotely. The …
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Low 2.0
Trix vulnerable to Cross-site Scripting on copy & paste
Trix is a what-you-see-is-what-you-get rich text editor for everyday writing. Versions prior to 2.1.15 are vulnerable to XSS attacks when pasting malicious code. An attacker could trick a user to copy and paste malicious code that would execute arbitrary Java…
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Low 2.0
i-Educar Stored Cross-Site Scripting vulnerability
i-Educar is free, fully online school management software. Version 2.9 of the application fails to properly validate and sanitize user supplied input, leading to a stored cross-site scripting vulnerability that resides within the user type (Tipo de Usuário) i…
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Low 3.5
q2apro q2apro-on-site-notifications q2apro-onsitenotifications-page.php process_request cross site scripting
A vulnerability, which was classified as problematic, was found in q2apro q2apro-on-site-notifications up to 1.4.6. This affects the function process_request of the file q2apro-onsitenotifications-page.php. The manipulation leads to cross site scripting. It i…
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Low 3.1
Discourse Code Review Plugin vulnerable to XSS via auto link commits
The Discourse Code Review Plugin allows users to review GitHub commits on Discourse. Prior to commit eed3a80, an attacker can execute arbitrary JavaScript on users' browsers by posting links to malicious GitHub commits. This problem is patched in commit eed3a…
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Low 3.5
Dell Storage Center - Dell Storage Manager, version(s) 21.0.20, contain(s) an Improper Neutralization of Input During W…
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Low 2.4
MRCMS Add Fragment Page add.do cross site scripting
A vulnerability was found in MRCMS 3.1.2 and classified as problematic. This issue affects some unknown processing of the file /admin/chip/add.do of the component Add Fragment Page. The manipulation leads to cross site scripting. The attack may be initiated r…
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Low 2.4
MRCMS Category Management Page add.do cross site scripting
A vulnerability has been found in MRCMS 3.1.2 and classified as problematic. This vulnerability affects unknown code of the file /admin/category/add.do of the component Category Management Page. The manipulation of the argument Name leads to cross site script…
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Low 2.4
MRCMS External Link Management Page edit.do cross site scripting
A vulnerability, which was classified as problematic, was found in MRCMS 3.1.2. This affects an unknown part of the file /admin/link/edit.do of the component External Link Management Page. The manipulation leads to cross site scripting. It is possible to init…
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Low 2.4
MRCMS Edit Article Page cross site scripting
A vulnerability, which was classified as problematic, has been found in MRCMS 3.1.2. Affected by this issue is some unknown functionality of the component Edit Article Page. The manipulation of the argument Title leads to cross site scripting. The attack may …
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Low 2.4
MRCMS Group Edit Page edit.do cross site scripting
A vulnerability was found in MRCMS 3.1.3 and classified as problematic. Affected by this issue is some unknown functionality of the file /admin/group/edit.do of the component Group Edit Page. The manipulation leads to cross site scripting. The attack may be l…
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Low 2.4
MRCMS Edit User Page edit.do cross site scripting
A vulnerability has been found in MRCMS 3.1.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/user/edit.do of the component Edit User Page. The manipulation of the argument Username leads to cross s…
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Low 3.5
SeaCMS admin_pay.php cross site scripting
A vulnerability, which was classified as problematic, has been found in SeaCMS 13.2. This issue affects some unknown processing of the file /admin_pay.php. The manipulation of the argument cstatus leads to cross site scripting. The attack may be initiated rem…
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Low 3.5
SeaCMS admin_paylog.php cross site scripting
A vulnerability classified as problematic was found in SeaCMS 13.2. This vulnerability affects unknown code of the file /admin_paylog.php. The manipulation of the argument cstatus leads to cross site scripting. The attack can be initiated remotely. The exploi…
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Low 3.5
Yeswiki Vulnerable to Authenticated Reflected Cross-site Scripting
YesWiki is a wiki system written in PHP. Prior to version 4.5.4, an attacker can use a reflected cross-site scripting attack to steal cookies from an authenticated user by having them click on a malicious link. Stolen cookies allow the attacker to take over t…
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Low 3.5
Redmine Custom Query cross site scripting
A vulnerability has been found in Redmine 6.0.0/6.0.1/6.0.2/6.0.3 and classified as problematic. This vulnerability affects unknown code of the component Custom Query Handler. The manipulation of the argument Name leads to cross site scripting. The attack can…
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Low 3.5
Seeyon Zhiyuan OA Web Application System ssoproxy.jsp cross site scripting
A vulnerability, which was classified as problematic, was found in Seeyon Zhiyuan OA Web Application System 8.1 SP2. Affected is an unknown function of the file seeyon\opt\Seeyon\A8\ApacheJetspeed\webapps\seeyon\ssoproxy\jsp\ssoproxy.jsp. The manipulation of …
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Low 3.5
Seeyon Zhiyuan OA Web Application System URL Parameter date.jsp cross site scripting
A vulnerability, which was classified as problematic, has been found in Seeyon Zhiyuan OA Web Application System 8.1 SP2. This issue affects some unknown processing of the file seeyon\opt\Seeyon\A8\ApacheJetspeed\webapps\seeyon\common\js\addDate\date.jsp of t…
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Low 2.4
TOTOLINK N150RT MAC Filtering Page home.htm cross site scripting
A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /home.htm of the component MAC Filtering Page. The manipulation of the argument Comment leads to c…
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Low 2.4
TOTOLINK N150RT LAN Settings Page fromStaticDHCP cross site scripting
A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /boafrm/fromStaticDHCP of the component LAN Settings Page. The manipulation of the argume…
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Low 2.4
TOTOLINK N150RT IP Port Filtering home.htm cross site scripting
A vulnerability was found in TOTOLINK N150RT 3.4.0-B20190525. It has been classified as problematic. Affected is an unknown function of the file /home.htm of the component IP Port Filtering. The manipulation of the argument Comment leads to cross site scripti…
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Low 3.5
baseweb JSite save cross site scripting
A vulnerability classified as problematic has been found in baseweb JSite up to 1.0. Affected is an unknown function of the file /sys/office/save. The manipulation of the argument Remarks leads to cross site scripting. It is possible to launch the attack remo…
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Low 3.5
itwanger paicoding post cross site scripting
A vulnerability has been found in itwanger paicoding 1.0.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /article/app/post. The manipulation of the argument content leads to cross site scripting. The att…
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Low 3.5
Self-XSS
Authenticated end-user may set a specially crafted SNX bookmark that can make their browser run a script while accessing their own bookmark list.
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Low 3.5
withstars Books-Management-System Comment add cross site scripting
A vulnerability classified as problematic was found in withstars Books-Management-System 1.0. This vulnerability affects unknown code of the file /api/comment/add of the component Comment Handler. The manipulation of the argument content leads to cross site s…
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Low 3.5
withstars Books-Management-System do cross site scripting
A vulnerability classified as problematic has been found in withstars Books-Management-System 1.0. This affects an unknown part of the file /admin/article/add/do. The manipulation of the argument Title leads to cross site scripting. It is possible to initiate…
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Low 3.5
withstars Books-Management-System Book Edit Page book_edit_do.html cross site scripting
A vulnerability was found in withstars Books-Management-System 1.0. It has been classified as problematic. Affected is an unknown function of the file /book_edit_do.html of the component Book Edit Page. The manipulation of the argument Name leads to cross sit…