# CVE-2026-124590: zhangbw409 library_manager_system UserController.java BookController.addBook improper authorization

Status: published. Published: 2026-11-09. Updated: 2026-11-09.

A security vulnerability has been detected in zhangbw409 library_manager_system f6c9d9c96bf5d2a32ef741daeaa29d80e6db166b/56514767a5207caf5e04c2cea379dfaa8cb5f00b. This impacts the function BookController.addBook of the file src/main/java/com/zbw/controller/UserController.java. The manipulation of the argument userName/userPwd/userEmail/userId leads to improper authorization. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The project was informed of the problem early through an issue report but has not responded yet.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- zhangbw409 / library_manager_system: 56514767a5207caf5e04c2cea379dfaa8cb5f00b (affected); f6c9d9c96bf5d2a32ef741daeaa29d80e6db166b (affected). Source: CNA: VulDB

## Severity and prioritization

- CVSS 4.0: 6.9 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P; source: CNA: VulDB

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 3.0: 7.3 (high); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C; source: CNA: VulDB

- CVSS 2.0: 7.5 (high); AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C; source: CNA: VulDB

- CVSS 4.0: 5.5 (medium); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: cna@vuldb.com

- CVSS 3.1: 7.3 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L; source: NVD: cna@vuldb.com

- CVSS 2.0: 7.5 (high); AV:N/AC:L/Au:N/C:P/I:P/A:P; source: NVD: cna@vuldb.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-285, CWE-266

## Exploit evidence

- exploit: https://github.com/zhangbw409/library_manager_system/issues/15 (CNA: VulDB)

## References

- https://vuldb.com/vuln/433014 (CNA: VulDB; vdb-entry, technical-description)

- https://vuldb.com/vuln/433014/cti (CNA: VulDB; signature, permissions-required)

- https://vuldb.com/cve/CVE-2026-124590 (CNA: VulDB; third-party-advisory)

- https://vuldb.com/submit/1040539 (CNA: VulDB; third-party-advisory)

- https://github.com/zhangbw409/library_manager_system/issues/15 (CNA: VulDB; exploit, issue-tracking)

- https://github.com/zhangbw409/library_manager_system/ (CNA: VulDB; product)

- https://github.com/zhangbw409/library_manager_system/ (cna@vuldb.com)

- https://github.com/zhangbw409/library_manager_system/issues/15 (cna@vuldb.com)

- https://vuldb.com/cve/CVE-2026-124590 (cna@vuldb.com)

- https://vuldb.com/submit/1040539 (cna@vuldb.com)

- https://vuldb.com/vuln/433014 (cna@vuldb.com)

- https://vuldb.com/vuln/433014/cti (cna@vuldb.com)

## Provenance

- CNA: VulDB: https://www.cve.org/CVERecord?id=CVE-2026-124590; retrieved 2026-11-09; source updated 2026-11-09

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124590; retrieved 2026-11-09; source updated 2026-11-09

Revision: cc65b288d7f0f5bc08999d2aba1085ca56d9641de2d43c2302ba9376d9d0a42d

Canonical: https://y2.dev/cve/CVE-2026-124590

## Agent and API access

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- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

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