CVE-2022-24849 is a medium-severity vulnerability affecting DisCatSharp, a .NET-based Discord API wrapper developed by Aiko-IT-Systems. The issue arises in versions 9.8.5, 9.8.6, 9.9.0, and prereleases of 10.0.0 prior to 9.9.1, where the use of specific attributes (`RequireDisCatSharpDeveloperAttribute`) or direct calls to `BaseDiscordClient.LibraryDeveloperTeam` causes the bot token to be transmitted to a web server controlled by the DisCatSharp development team, which is unaffiliated with Discord. Although the tokens were reportedly not logged by this server, the exposure of bot tokens to an unauthorized external server constitutes a sensitive information leak (CWE-200). Bot tokens are critical credentials that allow full control over Discord bots, including sending messages, managing servers, and accessing user data within the bot's permissions. The vulnerability does not require user interaction beyond the use of affected attributes or API calls, and no authentication bypass is involved since the tokens are leaked from the client side. The issue was patched in version 9.9.1 and in current 10.0.0 prereleases. Users unable to upgrade are advised to remove the vulnerable attributes and API calls to mitigate the risk. There are no known exploits in the wild, and the tokens were not logged, reducing the likelihood of widespread compromise, but the risk remains significant due to the sensitive nature of bot tokens.

For European organizations utilizing DisCatSharp to manage Discord bots, this vulnerability could lead to unauthorized access to bot accounts if tokens are intercepted or misused. Compromise of bot tokens can result in malicious actors impersonating bots, sending fraudulent messages, disrupting communications, or accessing sensitive server information. This can undermine trust in organizational communications, potentially leak confidential information, and disrupt automated workflows relying on bots. Organizations in sectors such as media, gaming, education, and customer support that leverage Discord bots for community engagement or internal communications are particularly at risk. Although the tokens were not logged by the external server, the mere transmission to an unauthorized endpoint increases the risk of interception or misuse. The impact on confidentiality is high due to token exposure, integrity can be affected if bots are manipulated, and availability may be disrupted if bots are disabled or misused. Since the vulnerability does not require user interaction beyond existing code usage, exploitation is relatively straightforward for affected users. However, the scope is limited to organizations using the affected DisCatSharp versions and specific attributes or API calls.

1. Immediate upgrade to DisCatSharp version 9.9.1 or later, or to the fixed 10.0.0 prereleases, is the most effective mitigation. 2. For users unable to upgrade promptly, remove all instances of `RequireDisCatSharpDeveloperAttribute` and any direct calls to `BaseDiscordClient.LibraryDeveloperTeam` from their codebase to prevent token transmission. 3. Reset all Discord bot tokens that may have been exposed to invalidate any potentially compromised credentials. 4. Implement monitoring for unusual bot activity, such as unexpected messages or commands, to detect possible misuse. 5. Review and restrict bot permissions to the minimum necessary to limit potential damage if a token is compromised. 6. Educate developers and administrators about secure handling of bot tokens and the importance of using updated library versions. 7. Consider network-level monitoring or blocking of outbound connections to unauthorized servers from environments running affected DisCatSharp versions as a temporary control.