CVE-2026-45272
CriticalCVSS 9.4Summary
MyBooks (Talebook) in version 3.41.2 and earlier contains a vulnerability in the handling of SOCIAL_AUTH key names in the AdminSettings.post handler. These names are concatenated without proper escaping into the auto.py file, allowing an administrator to inject arbitrary Python code. The code is executed during module import, enabling command execution with service privileges.
Risk Assessment
An administrator (or attacker with admin privileges) can execute arbitrary commands on the server, potentially leading to full system compromise, data theft, or persistent service disruption.
Recommendation
Update MyBooks to version 3.42.0 or later. Restrict access to the admin panel and monitor changes to configuration files.
Original NVD description (English source)
MyBooks is an enhanced and easy-to-use personal ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler in webserver/handlers/admin.py accepts SOCIAL_AUTH key names without validating quotes or newline characters, and SettingsLoader.dumpfile in webserver/loader.py concatenates those names into the generated Python source file auto.py without escaping them. An administrator can submit a crafted SOCIAL_AUTH key name that closes the settings dictionary and injects arbitrary Python statements. The application later executes those statements because SettingsLoader.loadfile imports auto.py as a module, and setting autoreload to true invokes restart_async so a process supervisor restarts the service and triggers the import. Successful exploitation executes commands with the privileges of the application service account and can disclose data, modify files, establish persistence, or disrupt the service. Related authorization and registration vulnerabilities can reduce the effective privilege requirement in a chained attack, but the standalone vulnerability requires administrator access. This issue is fixed in version 3.42.0.