Arbitrary Code Execution Vulnerability in MyBooks by PoxenStudio
CVE-2026-45272

9.4CRITICAL

Key Information:

Vendor

PoXen Projectstudio

Status
Talebook
Vendor
CVE Published:
19 August 2026

What is CVE-2026-45272?

MyBooks is a personal ebook management web server also referred to as Talebook. Versions 3.41.2 and earlier are affected by a significant vulnerability in the handling of SOCIAL_AUTH key names within the AdminSettings.post handler. The system fails to validate quotes and newline characters, allowing an attacker with administrator access to submit malicious key names. This unvalidated input is concatenated into a Python source file (auto.py) without appropriate escaping, facilitating the execution of arbitrary Python statements upon import. This flaw can lead to unauthorized command execution under the privileges of the application service account, resulting in potential data exposure, file modification, persistence establishment, or service disruption. The vulnerability is addressed in version 3.42.0.

Affected Version(s)

talebook < 3.42.0

References

https://github.com/PoxenStudio/mybooks/security/advisorie...
x_refsource_CONFIRM
https://github.com/PoxenStudio/mybooks/commit/a1780c98b00...
x_refsource_MISC
https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0
x_refsource_MISC

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.