---
id: CVE-2026-90941
title: >-
  novel-plus through 5.3.3 contains an authorization bypass vulnerability in the
  BookController download endpoint that allows authenticated backend accounts to
  export complete book text including paid chapters
summary: >-
  novel-plus through 5.3.3 contains an authorization bypass vulnerability in the
  BookController download endpoint that allows authenticated backend accounts to
  export complete book text including paid chapters. Attackers can supply a
  bookI…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-862
vendor: '201206030'
product: novel-plus
affected:
  - novel-plus <= 5.3.3
published: '2026-09-14'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:47.650'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90941'
references:
  - url: 'https://github.com/201206030/novel-plus'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-admin/src/main/java/com/java2nb/novel/controller/BookController.java
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-front/src/main/java/com/java2nb/novel/controller/page/PageController.java
    label: disclosure@vulncheck.com
  - url: 'https://github.com/201206030/novel-plus/releases/tag/v5.3.3'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/LinYuanyi1/cve-request-poc/blob/master/novel-plus/poc-09-book-download-missing-authorization.py
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/novel-plus-through-5.3.3-missing-authorization-on-the-admin-book-download-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00406
epssPercentile: 0.32172
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T15:03:53.883606Z'
ingestedAt: '2026-09-14T15:23:07.422Z'
---

## Overview

novel-plus through 5.3.3 contains an authorization bypass vulnerability in the BookController download endpoint that allows authenticated backend accounts to export complete book text including paid chapters. Attackers can supply a bookId and bookName to retrieve all chapter content without VIP or purchase verification, bypassing the permission checks and data-scope limits enforced elsewhere in the admin interface.

## Remediation

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