The web services implementation in Moodle 2.0.x before 2.0.6 and 2.1.x before 2.1.3 does not properly consider the maintenance-mode state and account attributes during login attempts, which allows remote authenticated users to bypass intended access restrictions by connecting to a webservice server.

cPanel before 68.0.27 does not validate database and dbuser names during renames (SEC-321).

Remedy AR System Server in BMC Remedy 7.1 may fail to set the correct user context in certain impersonation scenarios, which can allow a user to act with the identity of a different user, because userdata.js in the WOI:WorkOrderConsole component allows a username substitution involving a UserData_Init call.

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions anyone with access to the chat environment can write messages disguised as another chat participant.

IBM Datacap Fastdoc Capture 9.1.1, 9.1.3, and 9.1.4 could allow an authenticated user to bypass future authentication mechanisms once the initial login is completed. IBM X-Force ID: 148691.

The WPQA Builder Plugin WordPress plugin before 5.2, used as a companion plugin for the Discy and Himer , does not validate that the value passed to the image_id parameter of the ajax action wpqa_remove_image belongs to the requesting user, allowing any users (with privileges as low as Subscriber) to delete the profile pictures of any other user.

Incorrect access control in the Password Encryption module in Odoo Community 9.0 and Odoo Enterprise 9.0 allows authenticated users to change the password of other users without knowing their current password via a crafted RPC call.

Insufficient capability checks could allow users with the moodle/site:uploadusers capability to delete users, without having the necessary moodle/user:delete capability.

Apache Storm version 1.0.6 and earlier, 1.2.1 and earlier, and version 1.1.2 and earlier expose a vulnerability that could allow a user to impersonate another user when communicating with some Storm Daemons.

Mediawiki 1.31 before 1.31.1, 1.30.1, 1.29.3 and 1.27.5 contains a flaw where BotPasswords can bypass CentralAuth's account lock

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

In Jenkins before versions 2.44, 2.32.2 low privilege users were able to act on administrative monitors due to them not being consistently protected by permission checks (SECURITY-371).

Multiple vulnerabilities in Cisco BroadWorks CommPilot Application Software could allow an authenticated, remote attacker to delete arbitrary user accounts or gain elevated privileges on an affected system.

HashiCorp Terraform Enterprise up to v202102-2 failed to enforce an organization-level setting that required users within an organization to have two-factor authentication enabled. Fixed in v202103-1.

An issue was discovered in MediaWiki before 1.31.12 and 1.32.x through 1.35.x before 1.35.2. Special:Contributions can leak that a "hidden" user exists.

In Kanboard before 1.0.47, by altering form data, an authenticated user can edit a category of a private project of another user.

Broken Authentication in Atlassian Connect Spring Boot (ACSB) from version 1.1.0 before version 2.1.3: Atlassian Connect Spring Boot is a Java Spring Boot package for building Atlassian Connect apps. Authentication between Atlassian products and the Atlassian Connect Spring Boot app occurs with a server-to-server JWT or a context JWT. Atlassian Connect Spring Boot versions from version 1.1.0 before version 2.1.3 erroneously accept context JWTs in lifecycle endpoints (such as installation) where only server-to-server JWTs should be accepted, permitting an attacker to send authenticated re-installation events to an app.

Vivoh Webinar Manager before 3.6.3.0 has improper API authentication. When a user logs in to the administration configuration web portlet, a VIVOH_AUTH cookie is assigned so that they can be uniquely identified. Certain APIs can be successfully executed without proper authentication. This can let an attacker impersonate as victim and make state changing requests on their behalf.

The open-source identity infrastructure software Zitadel allows administrators to disable the user self-registration. Due to a missing security check in versions prior to 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7, disabling the "User Registration allowed" option only hid the registration button on the login page. Users could bypass this restriction by directly accessing the registration URL (/ui/login/loginname) and register a user that way. Versions 2.64.0, 2.63.5, 2.62.7, 2.61.4, 2.60.4, 2.59.5, and 2.58.7 contain a patch. No known workarounds are available.