Vulnerability Description
MyBooks is an ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler for POST /api/admin/settings in webserver/handlers/admin.py applies the auth decorator but does not check the self.admin_user property, unlike the corresponding GET handler. Any authenticated regular user can therefore overwrite server configuration values including SMTP credentials, OAuth client secrets, storage paths, security feature flags, and autoreload settings. The process_auth_header function in webserver/handlers/base.py also fails to verify the matched account's active flag, allowing a registered but unactivated account to authenticate and reach the vulnerable handler. Exploitation can disclose secrets through configuration access paths, sabotage application behavior, force service restarts, and supply the settings needed for related code-injection attacks. This issue is fixed in version 3.42.0.
Related Weaknesses (CWE)
References
- https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500ef
- https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0
- https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-354j-9hx8-3p45
- https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-354j-9hx8-3p45
FAQ
What is CVE-2026-45273?
CVE-2026-45273 is a documented vulnerability. MyBooks is an ebook management web server also known as Talebook. In 3.41.2 and earlier, the AdminSettings.post handler for POST /api/admin/settings in webserver/handlers/admin.py applies the auth dec...
How severe is CVE-2026-45273?
CVSS scoring is not yet available for CVE-2026-45273. Check NVD for updates.
Is there a patch for CVE-2026-45273?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.