---
id: CVE-2026-90939
title: >-
  novel-plus through 5.3.3 contains an information disclosure vulnerability in
  the /sys/user/list endpoint that lacks proper permission annotations
summary: >-
  novel-plus through 5.3.3 contains an information disclosure vulnerability in
  the /sys/user/list endpoint that lacks proper permission annotations.
  Authenticated attackers can retrieve password hashes and personal data
  including email add…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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: '2026-09-23T17:17:47.630'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90939'
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/system/controller/SysUserController.java
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/201206030/novel-plus/blob/d63c3ee394657046ebd469e263532a350a60e930/novel-admin/src/main/resources/mybatis/system/UserMapper.xml
    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-03-user-list-password-hash-disclosure.py
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/novel-plus-through-5.3.3-missing-authorization-on-the-admin-sys-user-list-endpoint
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00462
epssPercentile: 0.37363
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T14:50:45.473032Z'
ingestedAt: '2026-09-14T15:23:07.422Z'
---

## Overview

novel-plus through 5.3.3 contains an information disclosure vulnerability in the /sys/user/list endpoint that lacks proper permission annotations. Authenticated attackers can retrieve password hashes and personal data including email addresses and phone numbers for users within their data scope, enabling offline hash cracking and account takeover.

## Remediation

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