---
id: CVE-2026-51876
title: >-
  DeepTutor 1.4.0 contains an authorization bypass vulnerability in the book
  confirmation flow
summary: >-
  DeepTutor 1.4.0 contains an authorization bypass vulnerability in the book
  confirmation flow. An unauthenticated or unauthorized caller can reuse a
  publicly exposed book_id to submit a confirm-proposal request for an existing
  book, causi…
severity: none
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T22:17:02.387'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-51876'
references:
  - url: 'https://gist.github.com/Ro1ME/c5685936179edcbf942f3fdd745d1473'
    label: cve@mitre.org
  - url: 'https://github.com/HKUDS/DeepTutor/issues/514'
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T23:03:32.773Z'
---

## Overview

DeepTutor 1.4.0 contains an authorization bypass vulnerability in the book confirmation flow. An unauthenticated or unauthorized caller can reuse a publicly exposed book_id to submit a confirm-proposal request for an existing book, causing unauthorized overwrites of persisted metadata and spine content.

## Remediation

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