Mattermost fails to properly check a redirect URL parameter allowing for an open redirect was possible when the user clicked "Back to Mattermost" after providing a invalid custom url scheme in /oauth/{service}/mobile_login?redirect_to=

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5. It allows Phishing because an error page can have a link.

An issue was discovered in Mattermost Desktop App before 4.4.0. Attackers can open web pages in the desktop application because server redirection is mishandled, aka MMSA-2020-0008.

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 4.2.0, 4.1.1, and 4.0.5. E-mail templates can have a field in which HTML content is not neutralized.

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 Desktop App versions <=5.7.0 fail to correctly prompt for permission when opening external URLs which allows a remote attacker to force a victim over the Internet to run arbitrary programs on the victim's system via custom URI schemes.

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 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.

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.

Mattermost 6.4.x and earlier fails to properly invalidate pending email invitations when the action is performed from the system console, which allows accidentally invited users to join the workspace and access information from the public teams and channels.

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 2.1.0. It allows XSS via CSRF.

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.

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

With X-Pack installed, Kibana versions before 5.3.1 have an open redirect vulnerability on the login page that would enable an attacker to craft a link that redirects to an arbitrary website.

Gitea before 1.4.3 is affected by URL Redirection to Untrusted Site ('Open Redirect') via internal URLs.

A Remote Unauthorized Disclosure of Information vulnerability in HPE IceWall Federation Agent version 3.0 was found.

Open redirect vulnerability in Movable Type series Movable Type 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Advanced 7 r.4602 (7.1.3) and earlier (Movable Type 7), Movable Type Advanced 6.5.0 and 6.5.1 (Movable Type 6.5), Movable Type Advanced 6.3.9 and earlier (Movable Type 6.3.x, 6.2.x, 6.1.x, 6.0.x), Movable Type Premium 1.24 and earlier (Movable Type Premium), and Movable Type Premium (Advanced Edition) 1.24 and earlier (Movable Type Premium) allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a specially crafted URL.

Microsoft Exchange Server 2010 SP3, Exchange Server 2013 SP3, Exchange Server 2013 CU16, and Exchange Server 2016 CU5 allows an open redirect vulnerability that could lead to spoofing, aka "Microsoft Exchange Open Redirect Vulnerability".

An open redirect vulnerability is present in Piwigo 2.9 and probably prior versions, allowing remote attackers to redirect users to arbitrary web sites and conduct phishing attacks. The identification.php component is affected by this issue: the "redirect" parameter is not validated.

Open Redirect vulnerability in Hitachi Device Manager before 8.5.2-01 and Hitachi Tuning Manager before 8.5.2-00 allows remote attackers to redirect authenticated users to arbitrary web sites.

Nagios XI 2024R1.2.2 is vulnerable to an open redirect flaw on the Tools page, exploitable by users with read-only permissions. This vulnerability allows an attacker to craft a malicious link that redirects users to an arbitrary external URL without their consent.

The Wise Chat plugin before 2.7 for WordPress mishandles external links because rendering/filters/post/WiseChatLinksPostFilter.php omits noopener and noreferrer.

Adobe Connect versions 12.6, 11.4.7 and earlier are affected by a URL Redirection to Untrusted Site ('Open Redirect') vulnerability. An attacker could leverage this vulnerability to redirect users to malicious websites. Exploitation of this issue requires user interaction.

Optergy Proton/Enterprise devices allow Open Redirect.

Open Redirect vulnerability exists in SeedDMS 6.0.15 in out.Login.php, which llows remote malicious users to redirect users to malicious sites using the "referuri" parameter.

In Cloud Foundry router routing-release all versions prior to v0.163.0 and cf-release all versions prior to v274, in some applications, it is possible to append a combination of characters to the URL that will allow for an open redirect. An attacker could exploit this as a phishing attack to gain access to user credentials or other sensitive data. NOTE: 274 resolves the vulnerability but has a serious bug that is fixed in 275.

Open redirect vulnerability in OpenAM (Open Source Edition) 13.0 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a specially crafted page.

user_oidc app is an OpenID Connect user backend for Nextcloud. A malicious user could send a malformed login link that would redirect the user to a provided URL after successfully authenticating. It is recommended that the Nextcloud User OIDC app is upgraded to 6.1.0.

A maliciously crafted URL to a Django (1.10 before 1.10.7, 1.9 before 1.9.13, and 1.8 before 1.8.18) site using the ``django.views.static.serve()`` view could redirect to any other domain, aka an open redirect vulnerability.

Drupal core 7.x versions before 7.57 has an external link injection vulnerability when the language switcher block is used. A similar vulnerability exists in various custom and contributed modules. This vulnerability could allow an attacker to trick users into unwillingly navigating to an external site.

An issue was discovered in certain Apple products. iOS before 11.2 is affected. Safari before 11.0.2 is affected. iCloud before 7.2 on Windows is affected. iTunes before 12.7.2 on Windows is affected. tvOS before 11.2 is affected. watchOS before 4.2 is affected. The issue involves the "WebKit" component. It allows remote attackers to spoof user-interface information (about whether the entire content is derived from a valid TLS session) via a crafted web site that sends a 401 Unauthorized redirect.

Netflix Security Monkey before 0.8.0 has an Open Redirect. The logout functionality accepted the "next" parameter which then redirects to any domain irrespective of the Host header.

Insufficient policy enforcement in service workers in Google Chrome prior to 74.0.3729.108 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page.