---
id: CVE-2026-45273
title: MyBooks is an ebook management web server also known as Talebook
summary: >-
  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.ad…
severity: none
cwe:
  - CWE-862
published: '2026-08-19'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:13:25.910'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-45273'
references:
  - url: >-
      https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500efc02e92
    label: security-advisories@github.com
  - url: 'https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-354j-9hx8-3p45
    label: security-advisories@github.com
  - url: >-
      https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-354j-9hx8-3p45
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00518
epssPercentile: 0.43098
ingestedAt: '2026-09-09T21:22:45.539Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.