The Spotify app 8.9.58 for iOS has a buffer overflow in its use of strcat.

yourspotify is an open source, self hosted Spotify tracking dashboard. YourSpotify versions < 1.8.0 use a hardcoded JSON Web Token (JWT) secret to sign authentication tokens. Attackers can use this well-known value to forge valid authentication tokens for arbitrary users. This vulnerability allows attackers to bypass authentication and authenticate as arbitrary YourSpotify users, including admin users. This issue has been addressed in version 1.8.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

yourspotify is an open source, self hosted Spotify tracking dashboard. YourSpotify version < 1.9.0 does not prevent other pages from displaying it in an iframe and is thus vulnerable to clickjacking. Clickjacking can be used to trick an existing user of YourSpotify to trigger actions, such as allowing signup of other users or deleting the current user account. Clickjacking works by opening the target application in an invisible iframe on an attacker-controlled site and luring a victim to visit the attacker page and interacting with it. By positioning elements over the invisible iframe, a victim can be tricked into triggering malicious or destructive actions in the invisible iframe, while they think they interact with a totally different site altogether. When a victim visits an attacker-controlled site while they are logged into YourSpotify, they can be tricked into performing actions on their YourSpotify instance without their knowledge. These actions include allowing signup of other users or deleting the current user account, resulting in a high impact to the integrity of YourSpotify. This issue has been addressed in version 1.9.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Spotify Music Player 1.0.69.336. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of URI handlers. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code under the context of the current process. Was ZDI-CAN-5501.