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
LabRedesCefetRJ WeGIA Adicionar Unidade adicionar_unidade.php cross site scripting
A vulnerability has been found in LabRedesCefetRJ WeGIA 3.4.0 and classified as problematic. This vulnerability affects unknown code of the file /html/matPat/adicionar_unidade.php of the component Adicionar Unidade. The manipulation of the argument Insira a n…
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Low 3.5
PHPGurukul Hospital Management System manage-patient.php cross site scripting
A vulnerability classified as problematic was found in PHPGurukul Hospital Management System 4.0. Affected by this vulnerability is an unknown functionality of the file /doctor/manage-patient.php. The manipulation of the argument Name leads to cross site scri…
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Low 3.5
java-aodeng Hope-Boot WebController.java login cross site scripting
A vulnerability was found in java-aodeng Hope-Boot 1.0.0 and classified as problematic. This issue affects the function Login of the file /src/main/java/com/hope/controller/WebController.java. The manipulation of the argument errorMsg leads to cross site scri…
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Low 3.5
seaswalker spring-analysis SimpleController.java echo cross site scripting
A vulnerability was found in seaswalker spring-analysis up to 4379cce848af96997a9d7ef91d594aa129be8d71. It has been declared as problematic. Affected by this vulnerability is the function echo of the file /src/main/java/controller/SimpleController.java. The m…
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Low 2.4
SourceCodester Student Result Management System System Settings Page system cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /script/admin/system of the component System Settings Page. The manip…
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Low 2.4
SourceCodester Student Result Management System Manage Students Module manage_students cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0 and classified as problematic. This issue affects some unknown processing of the file /script/admin/manage_students of the component Manage Students Module. The manipulation lead…
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Low 2.4
CodeAstro Patient Record Management System Generate New Report Page cross site scripting
A vulnerability was found in CodeAstro Patient Record Management System 1.0. It has been rated as problematic. This issue affects some unknown processing of the component Generate New Report Page. The manipulation of the argument Patient Name/Name leads to cr…
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Low 3.5
code-projects Responsive Blog search.php cross site scripting
A vulnerability classified as problematic was found in code-projects Responsive Blog 1.0. Affected by this vulnerability is an unknown functionality of the file /search.php. The manipulation of the argument keyword leads to cross site scripting. The attack ca…
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Low 2.4
code-projects Responsive Blog pageViewMembers.php cross site scripting
A vulnerability was found in code-projects Responsive Blog 1.0/1.12.4/3.3.4. It has been declared as problematic. This vulnerability affects unknown code of the file /responsive/resblog/blogadmin/admin/pageViewMembers.php. The manipulation leads to cross site…
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Low 3.5
SourceCodester My Food Recipe Add Recipe Page add-recipe.php addRecipeModal cross site scripting
A vulnerability was found in SourceCodester My Food Recipe 1.0 and classified as problematic. Affected by this issue is the function addRecipeModal of the file /endpoint/add-recipe.php of the component Add Recipe Page. The manipulation of the argument Name le…
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Low 3.5
code-projects School Fees Payment System branch.php cross site scripting
A vulnerability classified as problematic has been found in code-projects School Fees Payment System 1.0. This affects an unknown part of the file /branch.php. The manipulation of the argument Branch/Address/Detail leads to cross site scripting. It is possibl…
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Low 2.4
PHPGurukul Notice Board System Add Notice manage-notices.php cross site scripting
A vulnerability, which was classified as problematic, has been found in PHPGurukul Notice Board System 1.0. This issue affects some unknown processing of the file /admin/manage-notices.php of the component Add Notice. The manipulation of the argument Title/De…
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Low 2.4
PHPGurukul Bus Pass Management System Profile Page admin-profile.php cross site scripting
A vulnerability, which was classified as problematic, has been found in PHPGurukul Bus Pass Management System 1.0. Affected by this issue is some unknown functionality of the file /admin/admin-profile.php of the component Profile Page. The manipulation of the…
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Low 3.5
PHPGurukul COVID19 Testing Management System Take Action test-details.php cross site scripting
A vulnerability classified as problematic was found in PHPGurukul COVID19 Testing Management System 1.0. Affected by this vulnerability is an unknown functionality of the file /test-details.php of the component Take Action. The manipulation of the argument re…
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Low 2.4
CodeAstro Food Ordering System POST Request Parameter edit cross site scripting
A vulnerability, which was classified as problematic, was found in CodeAstro Food Ordering System 1.0. Affected is an unknown function of the file /admin/store/edit/ of the component POST Request Parameter Handler. The manipulation of the argument Restaurant …
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Low 3.5
PHPGurukul Nipah Virus Testing Management System search-report.php cross site scripting
A vulnerability was found in PHPGurukul Nipah Virus Testing Management System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /search-report.php. The manipulation of the argument serachdata leads to cros…
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Low 2.4
PHPGurukul Rail Pass Management System aboutus.php cross site scripting
A vulnerability was found in PHPGurukul Rail Pass Management System 1.0. It has been classified as problematic. Affected is an unknown function of the file /admin/aboutus.php. The manipulation of the argument pagedes leads to cross site scripting. It is possi…
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Low 3.5
SourceCodester Online Student Clearance System add-fee.php cross site scripting
A vulnerability has been found in SourceCodester Online Student Clearance System 1.0 and classified as problematic. Affected by this vulnerability is an unknown functionality of the file /Admin/add-fee.php. The manipulation of the argument txtamt leads to cro…
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Low 3.5
PHPGurukul Rail Pass Management System add-pass.php cross site scripting
A vulnerability has been found in PHPGurukul Rail Pass Management System 1.0 and classified as problematic. This vulnerability affects unknown code of the file /admin/add-pass.php. The manipulation of the argument fullname leads to cross site scripting. The a…
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Low 3.5
PHPGurukul Restaurant Table Booking System check-status.php cross site scripting
A vulnerability, which was classified as problematic, has been found in PHPGurukul Restaurant Table Booking System 1.0. Affected by this issue is some unknown functionality of the file /check-status.php. The manipulation of the argument searchdata leads to cr…
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Low 2.4
PHPGurukul Restaurant Table Booking System add-table.php cross site scripting
A vulnerability classified as problematic was found in PHPGurukul Restaurant Table Booking System 1.0. Affected by this vulnerability is an unknown functionality of the file /admin/add-table.php. The manipulation of the argument tableno leads to cross site sc…
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Low 2.4
PHPGurukul Restaurant Table Booking System manage-subadmins.php cross site scripting
A vulnerability classified as problematic has been found in PHPGurukul Restaurant Table Booking System 1.0. Affected is an unknown function of the file /admin/manage-subadmins.php. The manipulation of the argument fullname leads to cross site scripting. It is…
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Low 2.4
PHPGurukul Restaurant Table Booking System add-subadmin.php cross site scripting
A vulnerability was found in PHPGurukul Restaurant Table Booking System 1.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /admin/add-subadmin.php. The manipulation of the argument fullname leads to cross site …
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Low 3.0
HTML Injection in Unprotected SAPUI5 applications
Unprotected SAPUI5 applications allow an attacker with basic privileges to inject malicious HTML code into a webpage, with the goal of redirecting users to the attacker controlled URL. This issue could impact the integrity of the application. Confidentiality …
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Low 3.5
jsnjfz WebStack-Guns File Upload UserMgrController.java cross site scripting
A vulnerability was found in jsnjfz WebStack-Guns 1.0. It has been classified as problematic. Affected is an unknown function of the file UserMgrController.java of the component File Upload. The manipulation of the argument File leads to cross site scripting.…
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Low 3.5
Emlog article.php cross site scripting
A vulnerability was found in Emlog up to 2.5.7 and classified as problematic. This issue affects some unknown processing of the file /admin/article.php. The manipulation of the argument active_post leads to cross site scripting. The attack may be initiated re…
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Low 3.5
Konica Minolta bizhub Display MFP Information List cross site scripting
A vulnerability, which was classified as problematic, was found in Konica Minolta bizhub up to 20250202. This affects an unknown part of the component Display MFP Information List. The manipulation of the argument Model Name leads to cross site scripting. It …
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Low 3.5
WuKongOpenSource WukongCRM File Upload AdminSysConfigController.java cross site scripting
A vulnerability, which was classified as problematic, was found in WuKongOpenSource WukongCRM 9.0. This affects an unknown part of the file AdminSysConfigController.java of the component File Upload. The manipulation of the argument File leads to cross site s…
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Low 3.5
code-projects Laundry System insert_type.php cross site scripting
A vulnerability was found in code-projects Laundry System 1.0 and classified as problematic. This issue affects some unknown processing of the file /data/insert_type.php. The manipulation of the argument Type leads to cross site scripting. The attack may be i…
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Low 3.5
code-projects Laundry System edit_type.php cross site scripting
A vulnerability has been found in code-projects Laundry System 1.0 and classified as problematic. This vulnerability affects unknown code of the file /data/edit_type.php. The manipulation of the argument Type leads to cross site scripting. The attack can be i…
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Low 2.0
License Center
A cross-site scripting (XSS) vulnerability has been reported to affect License Center. If exploited, the vulnerability could allow remote attackers who have gained user access to bypass security mechanisms or read application data. We have already fixed the v…
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Low 3.5
code-projects Laundry System edit_laundry.php cross site scripting
A vulnerability was found in code-projects Laundry System 1.0. It has been classified as problematic. This affects an unknown part of the file /data/edit_laundry.php. The manipulation of the argument Customer leads to cross site scripting. It is possible to i…
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Low 3.5
code-projects Laundry System insert_laundry.php cross site scripting
A vulnerability was found in code-projects Laundry System 1.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /data/insert_laundry.php. The manipulation of the argument Customer leads to cross site scripting. Th…
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Low 3.5
code-projects Traffic Offense Reporting System save-reported.php cross site scripting
A vulnerability was found in code-projects Traffic Offense Reporting System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /save-reported.php. The manipulation of the argument offence_id/vehicle_no/driv…
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Low 2.4
SourceCodester Student Result Management System Announcement Page announcement cross site scripting
A vulnerability classified as problematic has been found in SourceCodester Student Result Management System 1.0. This affects an unknown part of the file /script/academic/announcement of the component Announcement Page. The manipulation of the argument Title …
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Low 2.4
SourceCodester Student Result Management System Division System Page division-system cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /script/academic/division-system of the component Division System Page. The ma…
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Low 2.4
SourceCodester Student Result Management System Grading System Page grading-system cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /script/academic/grading-system of the component Grading System Page.…
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Low 2.4
SourceCodester Student Result Management System Subjects Page subjects cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0. It has been classified as problematic. Affected is an unknown function of the file /script/academic/subjects of the component Subjects Page. The manipulation of the argument Sub…
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Low 2.4
SourceCodester Student Result Management System Classes Page classes cross site scripting
A vulnerability was found in SourceCodester Student Result Management System 1.0 and classified as problematic. This issue affects some unknown processing of the file /script/academic/classes of the component Classes Page. The manipulation of the argument Cla…
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Low 2.4
SourceCodester Student Result Management System Add Academic Term terms cross site scripting
A vulnerability has been found in SourceCodester Student Result Management System 1.0 and classified as problematic. This vulnerability affects unknown code of the file /script/academic/terms of the component Add Academic Term. The manipulation of the argumen…