An issue was discovered in Mattermost Server before 3.1.0. It allows XSS via theme color-code values.

Boards in Mattermost allows an attacker to upload a malicious SVG image file as an attachment to a card and share it using a direct link to the file.

An issue was discovered in Mattermost Server before 5.8.0, when Town Square is set to Read-Only. Users can pin or unpin a post.

An issue was discovered in Mattermost Server before 4.5.0, 4.4.5, and 4.3.4. It mishandled webhook access control in the EnableOnlyAdminIntegrations case.

An issue was discovered in Mattermost Server before 4.4.3 and 4.3.3. Attackers could reconfigure an OAuth app in some cases where Mattermost is an OAuth 2.0 service provider.

Mattermost Desktop App fails to validate a mattermost server redirection and navigates to an arbitrary website

Mattermost fails to use  innerText / textContent when setting the channel name in the webapp during autocomplete, allowing an attacker to inject HTML to a victim's page by create a channel name that is valid HTML. No XSS is possible though. 

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. XSS can occur via a link on an error page.

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. It allows XSS via an uploaded file.

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the author_link field of a Slack attachment.

Fixed a bypass for a reflected cross-site scripting vulnerability affecting OAuth-enabled instances of Mattermost.

Mattermost Jira plugin versions shipped with Mattermost versions 8.1.x before 8.1.10, 9.2.x before 9.2.6, 9.3.x before 9.3.2, and 9.4.x before 9.4.3 fail to escape user-controlled outputs when generating HTML pages, which allows an attacker to perform reflected cross-site scripting attacks against the users of the Mattermost server.

Mattermost 5.38 and earlier fails to sufficiently sanitize clipboard contents, which allows a user-assisted attacker to inject arbitrary web script in product deployments that explicitly disable the default CSP.

An issue was discovered in Mattermost Server before 3.1.0. It allows XSS because the noreferrer and noopener protection mechanisms were not in place.

An issue was discovered in Mattermost Server before 3.0.0. It allows XSS via a Legal or Support setting.

An issue was discovered in Mattermost Server before 2.2.0. It allows XSS because it configures files to be opened in a browser window.

An issue was discovered in Mattermost Server before 3.5.1. XSS can occur via file preview.

An issue was discovered in Mattermost Server before 3.0.0. It allows XSS via a redirect URL.

An issue was discovered in Mattermost Server before 2.2.0. It allows XSS via a crafted link.

Mattermost version 8.1.6 and earlier fails to sanitize channel mention data in posts, which allows an attacker to inject markup in the web client.

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS attacks could occur against an OAuth 2.0 allow/deny page.

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via a goto_location response to a slash command.

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. Display names allow XSS.

An issue was discovered in Mattermost Server before 3.6.0 and 3.5.2. XSS can occur via a link on an error page.

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS can occur via OpenGraph data.

A reflected cross-site scripting vulnerability in the OAuth flow completion endpoints in Mattermost allows an attacker to send AJAX requests on behalf of the victim via sharing a crafted link with a malicious state parameter.

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. XSS could occur via the title_link field of a Slack attachment.

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. XSS could occur via a channel header.

The Elementor Header & Footer Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the url attribute within the plugin's Site Title widget in all versions up to, and including, 1.6.35 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Label Studio is an a popular open source data labeling tool. Versions prior to 1.9.2 have a cross-site scripting (XSS) vulnerability that could be exploited when an authenticated user uploads a crafted image file for their avatar that gets rendered as a HTML file on the website. Executing arbitrary JavaScript could result in an attacker performing malicious actions on Label Studio users if they visit the crafted avatar image. For an example, an attacker can craft a JavaScript payload that adds a new Django Super Administrator user if a Django administrator visits the image. The file `users/functions.py` lines 18-49 show that the only verification check is that the file is an image by extracting the dimensions from the file. Label Studio serves avatar images using Django's built-in `serve` view, which is not secure for production use according to Django's documentation. The issue with the Django `serve` view is that it determines the `Content-Type` of the response by the file extension in the URL path. Therefore, an attacker can upload an image that contains malicious HTML code and name the file with a `.html` extension to be rendered as a HTML page. The only file extension validation is performed on the client-side, which can be easily bypassed. Version 1.9.2 fixes this issue. Other remediation strategies include validating the file extension on the server side, not in client-side code; removing the use of Django's `serve` view and implement a secure controller for viewing uploaded avatar images; saving file content in the database rather than on the filesystem to mitigate against other file related vulnerabilities; and avoiding trusting user controlled inputs.

Craft CMS before 2.6.2982 allows for a potential XSS attack vector by uploading a malicious SVG file.

Pre-School Enrollment version 1.0 is vulnerable to Cross Site Scripting (XSS) on the profile.php page via fullname parameter.

Jenkins Edgewall Trac Plugin 1.13 and earlier does not escape the Trac website URL on the build page, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.

OpenWrt 21.02.1 allows XSS via the Port Forwards Add Name screen.

Synacor Zimbra Collaboration Suite (ZCS) before 8.7.10 has Persistent XSS.

GeniXCMS 1.0.2 has XSS triggered by an authenticated user who submits a page, as demonstrated by a crafted oncut attribute in a B element.

A Cross-Site Scripting (XSS) vulnerability in the Rendering Engine component in Apryse WebViewer v11.1 and earlier allows attackers to execute arbitrary code via a crafted PDF file.

The MP3 Audio Player – Music Player, Podcast Player & Radio by Sonaar plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute within the plugin's sonaar_audioplayer shortcode in all versions up to, and including, 5.5 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The review file upload resource in Atlassian Crucible before version 4.4.1 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability through the charset of a previously uploaded file.

geminabox (aka Gem in a Box) before 0.13.6 has XSS, as demonstrated by uploading a gem file that has a crafted gem.homepage value in its .gemspec file.

In Boostnote 0.12.1, exporting to PDF contains opportunities for XSS attacks.

Telaxus EPESI 1.8.2 and earlier has a Stored Cross-site Scripting (XSS) vulnerability in modules/Base/Dashboard/Dashboard_0.php, which allows remote attackers to inject arbitrary web script or HTML via a crafted tab_name parameter.

Cross-site scripting (XSS) vulnerability in IBM WebSphere Portal 7.x before 7.0.0.2 CF25 and 8.x before 8.0.0.1 CF8 allows remote authenticated users to inject arbitrary web script or HTML by leveraging improper tagging functionality.

Netgate pfSense CE (prior to 2.8.0 beta release) and corresponding Plus builds is vulnerable to Cross-site scripting (XSS) in the Automatic Configuration Backup (ACB) service, allowing remote attackers to execute arbitrary JavaScript, delete backups, or leak sensitive information via an unsanitized "reason" field and a derivable device key generated from the public SSH key.

Studio 42 elFinder through 2.1.31 allows XSS via an SVG document.

The Extensions for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘url’ parameter within the EE Button widget in all versions up to, and including, 2.0.30 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in NicheAddons Restaurant & Cafe Addon for Elementor allows Stored XSS.This issue affects Restaurant & Cafe Addon for Elementor: from n/a through 1.5.5.

Microsoft SharePoint Server 2013 Service Pack 1 allows an elevation of privilege vulnerability when it fails to properly sanitize a specially crafted web request to an affected SharePoint server, aka "Microsoft SharePoint XSS Vulnerability".

A potential security vulnerability has been identified with certain HP InkJet printers. The vulnerability could be exploited to allow cross-site scripting (XSS). Affected products and versions include: HP DeskJet 2600 All-in-One Printer series model numbers 4UJ28B, V1N01A - V1N08A, Y5H60A - Y5H80A; HP DeskJet Ink Advantage 2600 All-in-One Printer series model numbers V1N02A - V1N02B, Y5Z00A - Y5Z04B; HP DeskJet Ink Advantage 5000 All-in-One Printer series model numbers M2U86A - M2U89B; HP DeskJet Ink Advantage 5200 All-in-One Printer series model numbers M2U76A - M2U78B; HP ENVY 5000 All-in-One Printer series model numbers M2U85A - M2U85B, M2U91A - M2U94B, Z4A54A - Z4A74A; HP ENVY Photo 6200 All-in-One Printer series model numbers K7G18A-K7G26B, K7S21B, Y0K13D - Y0K15A; HP ENVY Photo 7100 All-in-One Printer series model numbers 3XD89A, K7G93A-K7G99A, Z3M37A - Z3M52A; HP ENVY Photo 7800 All-in-One Printer series model numbers K7R96A, K7S00A - K7S10D, Y0G42D - Y0G52B; HP Ink Tank Wireless 410 series model numbers Z4B53A - Z4B55A, Z6Z95A - Z6Z99A, 4DX94A - 4DX95A, 4YF79A, Z7A01A; HP OfficeJet 5200 All-in-One Printer series model numbers M2U75A, M2U81A-M2U84B, Z4B12A - Z4B14A, Z4B27A - Z4B29A; HP Smart Tank Wireless 450 series model numbers Z4B56A, Z6Z96A - Z6Z98A.

A Cross-site scripting (XSS) vulnerability in Secondary Email Field in Zoho ManageEngine ServiceDesk Plus 11.3 Build 11306 allows an attackers to inject arbitrary JavaScript code.