Weakness (CWE)
CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.
How to prevent it (4 mitigations)
-
Implementation
Carefully check each input parameter against a rigorous positive specification (allowlist) defining the specific characters and format allowed. All input should be neutralized, not just parameters that the user is supposed to specify, but all data in the request, including hidden fields, cookies, headers, the URL itself, and so forth. A common mistake that leads to continuing XSS vulnerabilities is to validate only fields that are expected to be redisplayed by the site. We often encounter data from the request that is reflected by the application server or the application that the development team did not anticipate. Also, a field that is not currently reflected may be used by a future developer. Therefore, validating ALL parts of the HTTP request is recommended.
-
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.
-
Implementation
With Struts, write all data from form beans with the bean's filter attribute set to true.
-
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-80
691 results · Feed
-
Medium 5.3
WordPress DeepDigital theme <= 1.0.2 - Arbitrary Shortcode Execution vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in mwtemplates DeepDigital deepdigital allows Code Injection.This issue affects DeepDigital: from n/a through <= 1.0.2.
-
Medium 5.3
WordPress WoodMart theme <= 8.3.7 - Arbitrary Shortcode Execution vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in xtemos WoodMart woodmart allows Code Injection.This issue affects WoodMart: from n/a through <= 8.3.7.
-
Medium 5.4
Security vulnerabilities have been found in IBM Application Gateway
IBM Application Gateway 23.10 through 25.09 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
-
Medium 4.3
SourceCodester E-Learning System Lesson index.php cross site scripting
A flaw has been found in SourceCodester E-Learning System 1.0. This impacts an unknown function of the file /admin/modules/lesson/index.php of the component Lesson Module Handler. Executing a manipulation of the argument Title/Description can lead to basic cr…
-
Medium 5.3
Dask distributed Vulnerable to Remote Code Execution via Jupyter Proxy and Dashboard
Dask distributed is a distributed task scheduler for Dask. Prior to 2026.1.0, when Jupyter Lab, jupyter-server-proxy, and Dask distributed are all run together, it is possible to craft a URL which will result in code being executed by Jupyter due to a cross-s…
-
Medium 4.8
Cisco Identity Services Engine Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Identity Services Engine (ISE) and Cisco ISE Passive Identity Connector (ISE-PIC) could allow an authenticated, remote attacker to conduct cross-site scripting (XSS) attacks against a user of the …
-
Medium 5.4
WordPress Easy Media Download plugin <= 1.1.11 - CSS Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Noor Alam Easy Media Download easy-media-download allows Reflection Injection.This issue affects Easy Media Download: from n/a through <= 1.1.11.
-
Medium 6.4
Responsive Pricing Table <= 5.1.12 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'table_currency'
The Responsive Pricing Table plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'table_currency' parameter in all versions up to, and including, 5.1.12 due to insufficient input sanitization and output escaping. This makes it possible f…
-
Medium 4.4
Key Figures <= 1.1 - Authenticated (Admin+) Stored Cross-Site Scripting via kf_field_figure_default_color_render
The Key Figures plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the kf_field_figure_default_color_render function in all versions up to, and including, 1.1 due to insufficient input sanitization and output escaping. This makes it possibl…
-
High 7.1
WP Photo Album Plus <= 9.1.05.008 - Reflected Cross-Site Scripting
The WP Photo Album Plus plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the ‘shortcode’ parameter in all versions up to, and including, 9.1.05.008 due to insufficient input sanitization and output escaping. This makes it possible for …
-
Medium 6.1
Reflected XSS in go-httpbin due to unrestricted client control over Content-Type
A cross-site scripting (XSS) vulnerability in mccutchen httpbin v2.17.1 allows attackers to execute arbitrary web scripts or HTML via a crafted payload.
-
Medium 5.4
XSS in IBM Aspera Faspex
IBM Aspera Faspex 5 5.0.0 through 5.0.14.1 is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
-
Medium 4.4
Amazon affiliate lite Plugin <= 1.0.0 - Authenticated (Administrator+) Stored Cross-Site Scripting
The "Amazon affiliate lite Plugin" plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 1.0.0 due to insufficient input sanitization and output escaping. This makes it possible for authenti…
-
Medium 6.5
WordPress Stockie Extra plugin <= 1.2.11 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Stockie Extra stockie-extra allows Code Injection.This issue affects Stockie Extra: from n/a through <= 1.2.11.
-
Medium 5.3
WordPress Norebro Extra plugin <= 1.6.8 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Norebro Extra norebro-extra allows Code Injection.This issue affects Norebro Extra: from n/a through <= 1.6.8.
-
High 8.6
LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload
LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared …
-
Medium 6.5CVE-2025-66472 Scanner template
XWiki vulnerable to a reflected XSS via xredirect parameter in DeleteApplication
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Versions 6.2-milestone-1 through 16.10.9 and 17.0.0-rc-1 through 17.4.1 of both XWiki Platform Flamingo Skin Resources and XWiki Platform Web Templates ar…
-
Medium 5.3
WordPress Contact Form 7 Dynamic Text Extension plugin <= 5.0.5 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in sevenspark Contact Form 7 – Dynamic Text Extension contact-form-7-dynamic-text-extension allows Code Injection.This issue affects Contact Form 7 – Dynamic Text Exte…
-
Critical 9.7
DeepChat's Incomplete XSS Fix Allows RCE through Mermaid Content
DeepChat is an open-source AI chat platform that supports cloud models and LLMs. Versions 0.5.1 and below are vulnerable to XSS attacks through improperly sanitized Mermaid content. The recent security patch for MermaidArtifact.vue is insufficient and can be …
-
Low 3.5
Grandstream GXP1625 Network Status api.values.post cross site scripting
A security flaw has been discovered in Grandstream GXP1625 1.0.7.4. The impacted element is an unknown function of the file /cgi-bin/api.values.post of the component Network Status Page. Performing manipulation of the argument vpn_ip results in basic cross si…
-
Medium 5.4
Nextcloud Server vulnerable to XSS in SVG images when opened outside of Nextcloud
Nextcloud Server is a self hosted personal cloud system. In Nextcloud Server and Server Enterprise prior to 31.0.12 and 32.0.3, a missing sanitization allowed malicious users to circumvent the content security policy when a malicious user manages to trick a u…
-
Medium 4.8
Stored XSS in Datateam's Datactive
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting'), Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Datateam Information Technologies Inc. Datactive allows Stored XSS. Thi…
-
Medium 6.1
Apache SkyWalking: Stored XSS vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache SkyWalking. This issue affects Apache SkyWalking: <= 10.2.0. Users are recommended to upgrade to version 10.3.0, which fixes the issue.
-
High 7.1CVE-2025-64764 Scanner template
Astro is vulnerable to Reflected XSS via the server islands feature
Astro is a web framework. Prior to version 5.15.8, a reflected XSS vulnerability is present when the server islands feature is used in the targeted application, regardless of what was intended by the component template(s). This issue has been patched in versi…
-
Medium 4.2
A improper neutralization of script-related html tags in a web page (basic xss) vulnerability in Fortinet FortiADC 8.0.…
-
Medium 6.4
VK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'vkExUnit_cta_url' and 'vkExUnit_cta_button_text' parameters in all versions up to, and including, 9.112.1. This is due to a logic error in the CTA save…
-
Medium 6.4
VK All in One Expansion Unit <= 9.112.1 - Authenticated (Contributor+) Stored Cross-Site Scripting
The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the '_veu_custom_css' parameter in all versions up to, and including, 9.112.1. This is due to insufficient input sanitization and output escaping on the use…
-
Medium 6.9
AVEVA Application Server IDE Basic Cross-site Scripting
The vulnerability, if exploited, could allow an authenticated miscreant (with privilege of "aaConfigTools") to tamper with App Objects' help files and persist a cross-site scripting (XSS) injection that when executed by a victim user, can result in horizontal…
-
Low 3.5
Bdtask/CodeCanyon Wholesale Inventory Control and Inventory Management System edit_profile cross site scripting
A vulnerability was found in Bdtask/CodeCanyon Wholesale Inventory Control and Inventory Management System up to 20250320. Impacted is an unknown function of the file /edit_profile. Performing manipulation of the argument first_name/last_name results in basic…
-
Low 3.5
Bdtask/CodeCanyon SalesERP User Profile edit_profile cross site scripting
A flaw has been found in Bdtask/CodeCanyon SalesERP up to 20250728. This vulnerability affects unknown code of the file /edit_profile of the component User Profile Handler. This manipulation of the argument first_name/last_name causes basic cross site scripti…
-
Medium 6.5
A Stored Cross Site Scripting (XSS) vulnerability was found in the Application Server of Desktop Alert PingAlert versio…
-
High 7.6
A Reflected Cross Site Scripting (XSS) vulnerability was found in the Application Server of Desktop Alert PingAlert ver…
-
Medium 6.4
Chart Expert <= 1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
The Chart Expert plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pmzez_chart' shortcode in all versions up to, and including, 1.0. This is due to insufficient input sanitization and output escaping on user supplied shortcode attribu…
-
Medium 5.4
Slippy Slider – Responsive Touch Navigation Slider <= 2.0 - Authenticated (Contributor+) Stored Cross-Site Scripting
The Slippy Slider – Responsive Touch Navigation Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'slippy-slider' shortcode in all versions up to, and including, 2.0 due to insufficient input sanitization and output esc…
-
Medium 4.6
OctoPrint is vulnerable to XSS through Action Command Notifications and Prompts
OctoPrint provides a web interface for controlling consumer 3D printers. Versions 1.11.3 and below are affected by a vulnerability that allows injection of arbitrary HTML and JavaScript into Action Command notifications and prompts popups generated by the pri…
-
Medium 5.4
IBM OpenPages Vulnerable to HTML Injection
IBM OpenPages 9.1, and 9.0 with Watson is vulnerable to HTML injection. A remote attacker could inject malicious HTML code, which when viewed, would be executed in the victim's Web browser within the security context of the hosting site.
-
High 7.1
WordPress TableOn plugin <= 1.0.5.1 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in RealMag777 TableOn posts-table-filterable allows Code Injection.This issue affects TableOn: from n/a through <= 1.0.5.1.
-
Medium 6.5
WordPress Easy Appointments plugin <= 3.12.14 - Content Injection vulnerability
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Easy Appointments Easy Appointments easy-appointments allows Code Injection.This issue affects Easy Appointments: from n/a through <= 3.12.14.
-
Medium 6.4
Ad Inserter <= 2.8.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom Field
The Ad Inserter – Ad Manager & AdSense Ads plugin for WordPress is vulnerable to Stored Cross-Site Scripting via custom field through the plugin's 'adinserter' shortcode in all versions up to, and including, 2.8.7 due to insufficient input sanitization and ou…
-
Medium 6.4
Visual Link Preview <= 2.2.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via visual-link-preview Shortcode
The Visual Link Preview plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's visual-link-preview shortcode in versions up to, and including, 2.2.7 due to insufficient input sanitization and output escaping on user supplied attrib…