Improper Authorization in zhangbw409 Library Manager System
CVE-2026-124590

6.9MEDIUM

Key Information:

Vendor

Zhangbw409

Status
Library Manager System
Vendor
CVE Published:
9 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-124590?

A significant security vulnerability has been identified in the zhangbw409 Library Manager System affecting the addBook function within the BookController class. This issue allows for improper authorization stemming from the manipulation of parameters such as userName, userPwd, userEmail, and userId. As a consequence, this vulnerability enables unauthorized actions to be taken, with the potential for exploitation initiated remotely. The vulnerability has been made publicly known, and it is crucial for users of the affected system to ensure adequate security measures are in place. The project's rolling release model presents a challenge in pinpointing specific affected versions, and the developers have yet to address this security concern despite having been notified through an issue report.

Affected Version(s)

library_manager_system 56514767a5207caf5e04c2cea379dfaa8cb5f00b

library_manager_system f6c9d9c96bf5d2a32ef741daeaa29d80e6db166b

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-124590 - Proof of Concept

References

https://vuldb.com/vuln/433014
vdb-entrytechnical-description
https://vuldb.com/vuln/433014/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-124590
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

ME4Dream (VulDB User)
VulDB CNA Team
.