donetick up to 0.1.43 JSON Web Token variable initialization

Summaryinfo

A vulnerability marked as critical has been reported in donetick up to 0.1.43. The impacted element is an unknown function of the component JSON Web Token Handler. This manipulation causes variable initialization. This vulnerability is handled as CVE-2025-47945. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in donetick up to 0.1.43. It has been declared as critical. Affected by this vulnerability is an unknown code of the component JSON Web Token Handler. The manipulation with an unknown input leads to a variable initialization vulnerability. The CWE definition for the vulnerability is CWE-453. The product, by default, initializes an internal variable with an insecure or less secure value than is possible. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Donetick an open-source app for managing tasks and chores. Prior to version 0.1.44, the application uses JSON Web Tokens (JWT) for authentication, but the signing secret has a weak default value. While the responsibility is left to the system administrator to change it, this approach is inadequate. The vulnerability is proven by existence of the issue in the live version as well. This issue can result in full account takeover of any user. Version 0.1.44 contains a patch.

The advisory is shared at github.com. This vulnerability is known as CVE-2025-47945 since 05/14/2025. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

Upgrading to version 0.1.44 eliminates this vulnerability. Applying the patch 620b897bc0135f6668bb8a5562678104531108eb 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.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• donetick

Version

• 0.1.0
• 0.1.1
• 0.1.2
• 0.1.3
• 0.1.4
• 0.1.5
• 0.1.6
• 0.1.7
• 0.1.8
• 0.1.9
• 0.1.10
• 0.1.11
• 0.1.12
• 0.1.13
• 0.1.14
• 0.1.15
• 0.1.16
• 0.1.17
• 0.1.18
• 0.1.19
• 0.1.20
• 0.1.21
• 0.1.22
• 0.1.23
• 0.1.24
• 0.1.25
• 0.1.26
• 0.1.27
• 0.1.28
• 0.1.29
• 0.1.30
• 0.1.31
• 0.1.32
• 0.1.33
• 0.1.34
• 0.1.35
• 0.1.36
• 0.1.37
• 0.1.38
• 0.1.39
• 0.1.40
• 0.1.41
• 0.1.42
• 0.1.43

License

• open-source

Website

• Product: https://github.com/donetick/donetick/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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