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CVE-2026-45273— MyBooks: Privilege Escalation via Missing Authorization on Admin Settings Endpoint

CVSS 8.7 · High EPSS 0.41% · P34

Affected Version Matrix 1

VendorProductVersion RangeStatus
PoxenStudiotalebook< 3.42.0affected
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I. Basic Information for CVE-2026-45273

Vulnerability Information
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Vulnerability Title
MyBooks: Privilege Escalation via Missing Authorization on Admin Settings Endpoint
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

VendorProductAffected VersionsCPESubscribe
PoxenStudiotalebook < 3.42.0 -

II. Public POCs for CVE-2026-45273

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 9418 chars
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III. Intelligence Information for CVE-2026-45273

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Patches & Fixes for CVE-2026-45273 (2)

Vendor Advisories for CVE-2026-45273 (1)

Same Patch Batch · PoxenStudio · 2026-08-19 · 3 CVEs total

CVE-2026-452729.4 CRITICALMyBooks: Remote Code Execution via SOCIAL_AUTH Key Name Injection in Python Config File
CVE-2026-452746.9 MEDIUMMyBooks: Unauthenticated Registration Bypass via Missing Server-Side ALLOW_REGISTER Enforc

IV. Related Vulnerabilities

Same product: talebook
Same vendor: PoxenStudio
Same weakness: CWE-862

V. Comments for CVE-2026-45273

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