Vulnerability · Published Sep 14, 2026 · Assigned by VulnCheck
CVE-2026-90939novel-plus through 5.3.3 Missing Authorization on the Admin /sys/user/list Endpoint
Medium 6.5
In plain English
A medium-severity missing authorization in novel-plus from 201206030. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 59.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| 201206030 | novel-plus | 0 – through 5.3.3 |
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- GET /sys/user/list password hash disclosure proof of concept exploit
- SysUserController.list carries no @RequiresPermissions while the sibling page method does technical-description
- UserMapper.xml list and listByPerm both select the password column technical-description
- novel-plus v5.3.3 Release Notes release-notes
- Product product
- VulnCheck Advisory: novel-plus through 5.3.3 Missing Authorization on the Admin /sys/user/list Endpoint third-party-advisory