CVE-2026-45274

MyBooks is anebook management web server also known as Talebook. In 3.41.2 and earlier, the SignUp.post handler for POST /api/user/sign_up in webserver/handlers/user.py does not enforce the ALLOW_REGISTER configuration flag, even though the frontend hides registration controls when the flag is false. An unauthenticated remote attacker can call the endpoint directly and create a valid account on an instance whose administrator disabled public registration. The process_auth_header function in webserver/handlers/base.py also does not verify the account's active flag, so the newly created and unactivated account can authenticate immediately and access user-level API functionality. The bypass defeats the intended account-creation policy and can supply the low-privilege account required by related authorization vulnerabilities. This issue is fixed in version 3.42.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/PoxenStudio/mybooks/commit/a1780c98b00566af7da2fc099fe38500efc02e92
https://github.com/PoxenStudio/mybooks/releases/tag/3.42.0
https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v
https://github.com/PoxenStudio/mybooks/security/advisories/GHSA-3q85-5vj5-qx5v

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-19 15:17

Updated : 2026-09-09 21:13

NVD link : CVE-2026-45274

Mitre link : CVE-2026-45274

CVE.ORG link : CVE-2026-45274

JSON object : View

Products Affected

No product.

CWE

CWE-602

Client-Side Enforcement of Server-Side Security

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