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
2,680 results · Clear filters · Feed
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Low 2.3
Nokogiri: Mutation XSS through `noscript` content in Nokogiri's HTML5 serializer
Nokogiri is an open source XML and HTML library for the Ruby programming language. From 1.12.0 until 1.19.5, the C extension on CRuby and TruffleRuby has a Nokogiri::HTML5 serializer that does not escape text inside noscript elements or angle brackets inside …
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Low 2.0
Winter CMS: Stored XSS through Backend List widget image columns
Winter CMS is a content management system built on the Laravel PHP framework. From 1.1.0 until 1.2.14, Backend\Widgets\Lists::evalImageTypeValue() interpolates the result of ImageResizer::filterGetUrl() into a single-quoted image source attribute without esca…
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Low 2.4
OctoPrint: Stored XSS via saved connection parameters
OctoPrint provides a web interface for controlling consumer 3D printers. From 2.0.0rc1 until 2.0.0rc7, an authenticated user can supply a crafted default port or baudrate through a connect request to the bundled Serial Connector plugin. OctoPrint persists the…
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Low 2.0
In Eclipse Langium versions 3.0.0 and later, the langium-sprotty package does not HTML-escape diagnostic messages befor…
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Low 2.4
SourceCodester Online Leave Management System Employee Avatar Upload Extension Master.php cross site scripting
A vulnerability was detected in SourceCodester Online Leave Management System 1.0. Affected is an unknown function of the file app/classes/Master.php of the component Employee Avatar Upload Extension. Performing a manipulation of the argument employee avatar …
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Low 3.5
Secure Custom Fields < 6.9.8 - Admin+ Stored XSS via HTML Attribute Name Injection into Field Definition
The Secure Custom Fields WordPress plugin before 6.9.8 does not sanitize a persisted field definition before emitting part of it as an HTML attribute name, allowing a user able to configure its fields to store a payload that executes as JavaScript in the brow…
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Low 3.5
Live Composer < 2.1.23 - Admin+ Stored XSS via Partner Slug
The Live Composer WordPress plugin before 2.1.23 does not sanitise and escape some of its custom post type slug settings before using them in front-end links, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks …
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Low 3.5
Easy Social Icons < 4.0.3 - Admin+ Stored XSS via Icon Color Settings
The Easy Social Icons WordPress plugin before 4.0.3 does not sanitise and escape some of its settings before outputting them on front-end pages, which could allow high-privilege users such as Administrators to perform Stored Cross-Site Scripting attacks when …
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Low 2.4
SourceCodester Online Food Ordering System Category Management add_category.php cross site scripting
A vulnerability was found in SourceCodester Online Food Ordering System 1.0. The impacted element is an unknown function of the file admin/add_category.php of the component Category Management. Performing a manipulation of the argument category_title results …
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Low 3.5
EmpireSoft EmpireCMS index.php cross site scripting
A security flaw has been discovered in EmpireSoft EmpireCMS up to 8.0. Impacted is an unknown function of the file /e/member/mspace/index.php. The manipulation of the argument spacename results in cross site scripting. It is possible to launch the attack remo…
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Low 3.5
InfiniFlow RAGFlow Images API file_utils.py cross site scripting
A vulnerability was identified in InfiniFlow RAGFlow up to 0.27.2. This issue affects some unknown processing of the file api/utils/file_utils.py of the component Images API. The manipulation leads to cross site scripting. It is possible to initiate the attac…
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Low 3.3
Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper Neutralization of Input During Web Page…
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Low 2.4
Ruijie RG-ES205GC Cloud Management set_cloud_serverUrl.cgi cross site scripting
A security flaw has been discovered in Ruijie RG-ES205GC, RG-ES206GC-P, RG-ES208GC, RG-ES210GC-LP and RG-ES210GS-P ESW_1.0(1)B1P48. The affected element is an unknown function of the file set_cloud_serverUrl.cgi of the component Cloud Management. The manipula…
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Low 3.5CVE-2026-120218 Public exploit
Typemill SvgSanitizer.php saveImage cross site scripting
A flaw has been found in Typemill up to 2.26.0. The impacted element is the function ControllerApiImage::saveImage of the file system/typemill/Models/SvgSanitizer.php. Executing a manipulation can lead to cross site scripting. The attack may be performed from…
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Low 3.5
PostyBirb Plus Submission Description Editor DescriptionInput.tsx cross site scripting
A security flaw has been discovered in PostyBirb Plus up to 3.1.75. Affected by this vulnerability is an unknown functionality of the file ui/src/views/submissions/submission-forms/form-components/DescriptionInput.tsx of the component Submission Description E…
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Low 3.8
Menu Link Attributes - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-209
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Menu Link Attributes allows Stored XSS. This issue affects Menu Link Attributes versions: from 0.0.0 to 1.8.0.
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Low 3.1
Country - Moderately critical - Cross-site scripting - SA-CONTRIB-2026-211
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Country allows Cross-Site Scripting (XSS). This issue affects Country versions: from 0.0.0 to 2.1.3, from 2.2.0 to 2.2.1.
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Low 3.5
Data field - Moderately critical - Cross site scripting - SA-CONTRIB-2026-250
Improper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Data field allows Stored XSS. This issue affects Data field versions: from 0.0.0 to 2.0.14.
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Low 3.5
LetterPress < 2.4.0 - Admin+ Stored XSS
The LetterPress WordPress plugin before 2.4.0 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for ex…
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Low 3.5
LatePoint < 5.7.6 - Admin+ Stored XSS via Booking Form Step Settings
The Appointment Booking Plugin WordPress plugin before 5.7.6 does not escape several booking-form step content settings before rendering them on the public booking form, allowing high-privilege users such as administrators to inject JavaScript that executes i…
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Low 3.5
configuroweb inventariobasico Add Product addlist.php cross site scripting
A vulnerability was identified in configuroweb inventariobasico c9377cdba474deb3eb5a0704d197b5733af16b47/f9db0c0a04d79ad931c218140df4fb23809d4fab. This vulnerability affects unknown code of the file addlist.php of the component Add Product Page. Such manipula…
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Low 2.1
Vue I18n: `escapeParameter` does not escape named values when the same call also passes a list
Vue I18n is the internationalization plugin for Vue.js. From 9.0.0-beta.5 until 11.4.14 and 12.0.0-alpha.5, enabling escapeParameter, called escapeParameterHtml in the Legacy API, does not escape named interpolation values when the same translation call suppl…
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Low 3.1
CKEditor: Cross-site scripting (XSS) in the engine package
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object conten…
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Low 3.5
darylldoyle svg-sanitizer before 1.0.0 CSS Injection and Remote Reference Bypass
darylldoyle svg-sanitizer before 1.0.0 contains CSS injection and remote reference bypass vulnerabilities that allow attackers to embed external resources by uploading crafted SVG files. Attackers can use unsanitized style content, unquoted url() values, or i…
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Low 3.5
Saruf-Ratul HR-Payroll-Management-System chat.php cross site scripting
A flaw has been found in Saruf-Ratul HR-Payroll-Management-System e7cd81477001afdee95b843fd4137894d9418c9f/3fd6f45ead9f8197510c0910f759e06ee67251e5. Affected by this vulnerability is an unknown functionality of the file chat.php. Executing a manipulation of t…
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Low 3.5
MD-MAFUJUL-HASAN Online-Payroll-Management-System chat.php cross site scripting
A vulnerability was detected in MD-MAFUJUL-HASAN Online-Payroll-Management-System up to a8902bf64575e325f6d6bf93a55f7bd273ec58cd. Affected is an unknown function of the file chat.php. Performing a manipulation of the argument ID results in cross site scriptin…
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Low 2.4
Argilla TextField.vue cross site scripting
A vulnerability was found in Argilla up to 2.8.0. This affects an unknown function of the file argilla-frontend/components/features/annotation/container/fields/text-field/TextField.vue. The manipulation of the argument text results in cross site scripting. Th…
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Low 2.4
Argilla Sandbox.vue cross site scripting
A vulnerability has been found in Argilla up to 2.8.0. The impacted element is an unknown function of the file argilla-frontend/components/features/annotation/container/fields/sandbox/Sandbox.vue. The manipulation of the argument template leads to cross site …
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Low 3.5
Argilla Settings SettingsInfo.vue Dataset.from_disk cross site scripting
A flaw has been found in Argilla up to 2.8.0. The affected element is the function Dataset.from_disk of the file argilla-frontend/components/features/annotation/settings/SettingsInfo.vue of the component Settings Page. Executing a manipulation of the argument…
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Low 3.5
subhajitkhan online-clinic-management-system patientregistration.php cross site scripting
A vulnerability has been found in subhajitkhan online-clinic-management-system up to e9ee77a8827a1446220fa07ee693dc4d9a29a578. Affected is an unknown function of the file patientregistration.php. Such manipulation of the argument pat_name leads to cross site …
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Low 2.3
Asterisk: Reflected XSS in Phone Provisioning HTTP Error Pages
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unauthenticated attacker may use reflected cross-site scripting in `phone provisio…
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Low 3.5
Bdtask Garage 24 Garage Management Software Profile edit_profile cross site scripting
A security vulnerability has been detected in Bdtask Garage 24 Garage Management Software 1.0. This issue affects some unknown processing of the file /edit_profile of the component Profile. The manipulation of the argument first_name/last_name leads to cross …
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Low 3.5
ffxiv-teamcraft FFXIV Teamcraft Renderer-Process IPC Bridge preload.ts clipboard.readText cross site scripting
A vulnerability was determined in ffxiv-teamcraft FFXIV Teamcraft up to 11.4.31. Impacted is the function clipboard.readText of the file apps/electron/src/preload.ts of the component Renderer-Process IPC Bridge. This manipulation causes cross site scripting. …
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Low 2.4
Edimax BR-6208AC Virtual Server cross site scripting
A vulnerability has been found in Edimax BR-6208AC 1.32. This vulnerability affects unknown code of the component Virtual Server Page. The manipulation leads to cross site scripting. Remote exploitation of the attack is possible. The exploit has been disclose…
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Low 2.4
gougucms User Level Level.php add cross site scripting
A vulnerability has been found in gougucms up to 4.08.18. Impacted is the function Add of the file app/admin/controller/Level.php of the component User Level Handler. The manipulation of the argument Title leads to cross site scripting. The attack is possible…
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Low 3.6
ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 Code Injection via MVG Encoder Drawing Options
ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 contains an injection vulnerability in the MVG encoder, which does not properly neutralize user-specified drawing options before writing them into generated MVG output. Attackers who can supply drawing opti…
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Low 3.5
Contact Form by Supsystic < 1.8.0 - Admin+ Stored XSS
The Contact Form by Supsystic WordPress plugin before 1.8.0 does not sanitise and escape a form name, allowing users with access to the form editor to inject arbitrary web scripts that execute when another user views the form. On multisite installations, wher…
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Low 3.5CVE-2026-116004 Public exploit
onyx-dot-app Onyx PreviewTab.tsx cross site scripting
A security vulnerability has been detected in onyx-dot-app Onyx up to 5.0.0. Impacted is an unknown function of the file web/src/app/craft/components/output-panel/PreviewTab.tsx. The manipulation leads to cross site scripting. The attack can be initiated remo…
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Low 2.4
phpIPAM index.php cross site scripting
A security vulnerability has been detected in phpIPAM up to 1.8.3. Affected by this vulnerability is an unknown functionality of the file upgrade/index.php. Such manipulation of the argument REQUEST_URI leads to cross site scripting. The attack may be launche…
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Low 2.1
Serialize JavaScript: Cross-site scripting (XSS) via unescaped </script at the end of a serialized function body
Serialize JavaScript serializes JavaScript values to a superset of JSON that includes regular expressions and functions. Prior to 7.1.3, the function-source escaping logic does not neutralize a bare closing-script prefix when attacker-influenced function sour…