joni1802 ts3-manager up to 2.2.1 Unicode Server denial of service

Summaryinfo

A vulnerability classified as problematic was found in joni1802 ts3-manager up to 2.2.1. This impacts an unknown function of the component Unicode Handler. The manipulation of the argument Server results in denial of service. This vulnerability is identified as CVE-2025-61582. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in joni1802 ts3-manager up to 2.2.1. Affected is an unknown function of the component Unicode Handler. The manipulation of the argument Server with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

TS3 Manager is modern web interface for maintaining Teamspeak3 servers. A Denial of Dervice vulnerability has been identified in versions 2.2.1 and earlier. The vulnerability permits an unauthenticated actor to crash the application through the submission of specially crafted Unicode input, requiring no prior authentication or privileges. The flaw manifests when Unicode tag characters are submitted to the Server field on the login page. The application fails to properly handle these characters during the ASCII conversion process, resulting in an unhandled exception that terminates the application within four to five seconds of submission. This issue is fixed in version 2.2.2.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-61582 since 09/26/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 2.2.2 eliminates this vulnerability. Applying the patch 3a069915f97a6f5dae1fe0b2e32aa11a69d83b5e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• joni1802

Name

• ts3-manager

Version

• 2.2.0
• 2.2.1

License

• open-source

Website

• Product: https://github.com/joni1802/ts3-manager/

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