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)
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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.
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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-80
693 results · Feed
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Medium 5.4
XSS vulnerability in repository issue list in Gogs
Gogs is an open source self-hosted Git service. In versions of gogs prior to 0.12.9 `DisplayName` does not filter characters input from users, which leads to an XSS vulnerability when directly displayed in the issue list. This issue has been resolved in commi…
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Low 3.5
SialWeb CMS Search cross site scriting
A vulnerability has been found in SialWeb CMS and classified as problematic. This vulnerability affects unknown code of the component Search Handler. The manipulation leads to cross site scripting. The attack can be initiated remotely. The exploit has been di…
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High 7.4
Cross-site Scripting in Filter Stream Converter Application in XWiki Platform
XWiki Platform Filter UI provides a generic user interface to convert from a XWiki Filter input stream to an output stream with settings for each stream. Starting with versions 6.0-milestone-2 and 5.4.4 and prior to versions 12.10.11, 14.0-rc-1, 13.4.7, and 1…
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Medium 4.8
Cisco UCS Director JavaScript Cross-Site Scripting Vulnerability
A vulnerability in the web applications of Cisco UCS Director could allow an authenticated, remote attacker to conduct a cross-site scripting attack on an affected system. This vulnerability is due to unsanitized user input. An attacker could exploit this vul…
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High 7.4
Cross-site Scripting in the Flamingo theme manager
XWiki Platform Flamingo Theme UI is a tool that allows customization and preview of any Flamingo-based skin. Starting with versions 6.2.4 and 6.3-rc-1, a possible cross-site scripting vector is present in the `FlamingoThemesCode.WebHomeSheet` wiki page relate…
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High 7.4
Cross-site Scripting in XWiki Platform Wiki UI Main Wiki
XWiki Platform Wiki UI Main Wiki is a package for managing subwikis. Starting with version 5.3-milestone-2, XWiki Platform Wiki UI Main Wiki contains a possible cross-site scripting vector in the `WikiManager.JoinWiki ` wiki page related to the "requestJoin" …
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Medium 5.4
A cross-site scripting (xss) vulnerability exists in the info.jsp functionality of InHand Networks InRouter302 V3.5.4. …
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Medium 6.1
Cisco Firepower Management Center Software Cross-Site Scripting Vulnerability
A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, remote attacker to conduct a cross-site scripting attack. This vulnerability is due to improper validation of user-suppli…
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Critical 9.1CVE-2022-21145 EPSS 78%
A stored cross-site scripting vulnerability exists in the WebUserActions.aspx functionality of Lansweeper lansweeper 9.…
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Unscored —
A vulnerability has been identified in SCALANCE X302-7 EEC (230V), SCALANCE X302-7 EEC (230V, coated), SCALANCE X302-7 …
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Unscored —
NS WooCommerce Watermark <= 2.11.3 - Abuse of Functionality
An unprivileged user could use the functionality of the NS WooCommerce Watermark WordPress plugin through 2.11.3 to load images that hide malware for example from passing malicious domains to hide their trace, by making them pass through the vulnerable domain.
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Medium 5.7
In JetBrains YouTrack before 2022.1.43563 HTML code from the issue description was being rendered
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Low 3.8
Stored Cross-Site Scripting (XSS)
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Group Functionality of Profelis IT Consultancy SambaBox allows AUTHENTICATED user to cause execute arbitrary codes on the vulnerable server. This issue affects: Pro…
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Medium 5.5
Pro2col Stingray FTS cross site scriting
A vulnerability, which was classified as problematic, has been found in Pro2col Stingray FTS. The manipulation of the argument Username leads to cross site scripting. The attack may be initiated remotely. It is recommended to upgrade the affected component. N…
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Medium 5.0
ISS BlackICE PC Protection Update cross site scriting
A vulnerability was found in ISS BlackICE PC Protection. It has been rated as problematic. Affected by this issue is the Update Handler. The manipulation with an unknown input leads to cross site scripting. The attack may be launched remotely. The exploit has…
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Low 2.0
HTML Injection while inviting Guests
Mattermost 6.3.0 and earlier fails to properly sanitize the HTML content in the email invitation sent to guest users, which allows registered users with special permissions to invite guest users to inject unescaped HTML content in the email invitations.
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Medium 6.1
Basic Cross-site Scripting and Unrestricted Upload of File with Dangerous Type in Sylius
Sylius is an open source eCommerce platform. In versions prior to 1.9.10, 1.10.11, and 1.11.2, it is possible to upload an SVG file containing cross-site scripting (XSS) code in the admin panel. In order to perform a XSS attack, the file itself has to be open…
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Unscored —
A vulnerability has been identified in COMOS V10.2 (All versions only if web components are used), COMOS V10.3 (All ver…
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Low 3.7
Self XSS on user input
jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. Versions prior to 2.31.1 contain a low impact and limited cross-site scripting (XSS) vulnerability. The code for XSS payload is always visible, but an attacker c…
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High 7.3
Cross-site scripting (XSS) from image block content in the site frontend
Kirby is an open source file structured CMS. In affected versions Kirby's blocks field stores structured data for each block. This data is then used in block snippets to convert the blocks to HTML for use in your templates. We recommend to escape HTML special…
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Medium 5.5
LearnPress – WordPress LMS Plugin <= 4.1.3.1 Authenticated Stored Cross-Site Scripting
The LearnPress WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient escaping on the $custom_profile parameter found in the ~/inc/admin/views/backend-user-profile.php file which allowed attackers with administrative user access to …
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Critical 10.0
Failure to Sanitize Special Elements into a Different Plane (Special Element Injection) in notebook
The Jupyter notebook is a web-based notebook environment for interactive computing. In affected versions untrusted notebook can execute code on load. Jupyter Notebook uses a deprecated version of Google Caja to sanitize user inputs. A public Caja bypass can b…
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High 7.4
LeafKit allows XSS with untrusted user input
Leafkit is a templating language with Swift-inspired syntax. Versions prior to 1.3.0 are susceptible to Cross-site Scripting (XSS) attacks. This affects anyone passing unsanitised data to Leaf's variable tags. Before this fix, Leaf would not escape any string…
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High 7.1
Cross-site scripting (XSS) from field and configuration text displayed in the Panel
Kirby is a content management system. In Kirby CMS versions 3.5.5 and 3.5.6, the Panel's `ListItem` component (used in the pages and files section for example) displayed HTML in page titles as it is. This could be used for cross-site scripting (XSS) attacks. …
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Unscored —
Stored XSS Vulnerability in Q'center
This issue affects: QNAP Systems Inc. Q'center versions prior to 1.11.1004.
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Unscored —
Stored XSS Vulnerability in QuLog Center
A stored XSS vulnerability has been reported to affect QNAP NAS running QuLog Center. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QuLog Center versions prior to 1.2.0.
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Low 3.1
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ federation management plugin
RabbitMQ is a multi-protocol messaging broker. In rabbitmq-server prior to version 3.8.18, when a federation link was displayed in the RabbitMQ management UI via the `rabbitmq_federation_management` plugin, its consumer tag was rendered without proper <script…
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Low 3.1
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in RabbitMQ management UI
RabbitMQ is a multi-protocol messaging broker. In rabbitmq-server prior to version 3.8.17, a new user being added via management UI could lead to the user's bane being rendered in a confirmation message without proper `<script>` tag sanitization, potentially …
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High 8.1
Improper Neutralization of Script-Related HTML Tags in Notes
HedgeDoc is a platform to write and share markdown. HedgeDoc before version 1.8.2 is vulnerable to a cross-site scripting attack using the YAML-metadata of a note. An attacker with write access to a note can embed HTML tags in the Open Graph metadata section …
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Medium 5.4
Stored cross-site scripting in Grid component in Vaadin 7 and 8
Missing variable sanitization in Grid component in com.vaadin:vaadin-server versions 7.4.0 through 7.7.19 (Vaadin 7.4.0 through 7.7.19), and 8.0.0 through 8.8.4 (Vaadin 8.0.0 through 8.8.4) allows attacker to inject malicious JavaScript via unspecified vector
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Medium 6.1
Self-XSS
Wrongthink is an encrypted peer-to-peer chat program. A user could check their fingerprint into the service and enter a script to run arbitrary JavaScript on the site. No workarounds exist, but a patch exists in version 2.4.1.
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Unscored —
Cross-site Scripting Vulnerability in File Station
A cross-site scripting (XSS) vulnerability has been reported to affect earlier versions of File Station. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions: QTS…
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Medium 4.6
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) in @nextcloud/dialogs
The Nextcloud dialogs library (npm package @nextcloud/dialogs) before 3.1.2 insufficiently escaped text input passed to a toast. If your application displays toasts with user-supplied input, this could lead to a XSS vulnerability. The vulnerability has been p…
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Medium 4.7
Cisco Webex Meetings HTML Injection Vulnerability
A vulnerability in certain web pages of Cisco Webex Meetings could allow an unauthenticated, remote attacker to modify a web page in the context of a user's browser. The vulnerability is due to improper checks on parameter values in affected pages. An attacke…
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Medium 4.9
Micro Focus Solutions Business Manager Application Repository versions prior to 11.7.1 are vulnerable to reflected XSS.
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Medium 6.1
Cisco Webex Meetings Cross-Site Scripting Vulnerability
A vulnerability in the web-based interface of Cisco Webex Meetings could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack against a user of the web-based interface of the affected service. The vulnerability is due to in…
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Unscored —
Cross-site Scripting Vulnerability in Photo Station
This cross-site scripting vulnerability in Photo Station allows remote attackers to inject malicious code. QANP We have already fixed this vulnerability in the following versions of Photo Station. Photo Station 6.0.11 and later
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Critical 9.6CVE-2020-13564 EPSS 76%
A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP re…
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Critical 9.6CVE-2020-13563 EPSS 76%
A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP re…
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Critical 9.6CVE-2020-13562 EPSS 78%
A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP re…