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


- **Severity:** Medium 6.9 (`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`)
- **Exploited in the wild:** Not known
- **Fix available:** No
- **Published:** 9 Nov 2026
- **Updated:** 10 Nov 2026
- **Also known as:** GHSA-r9m7-h73f-c4f7

## What is CVE-2026-124590?

CVE-2026-124590 is a medium-severity vulnerability in zhangbw409 library_manager_system, published on 9 Nov 2026. 

### Official description

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.

Weakness: CWE-285 (Improper Authorization), CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2026-124590?


## How do I fix CVE-2026-124590?

No fix has been published for CVE-2026-124590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-124590 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124590 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-124590 and fix it if it is affected.

What it is: CVE-2026-124590 is a medium-severity vulnerability in zhangbw409 library_manager_system, published on 9 Nov 2026. 
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-124590 exists.

Affected product: zhangbw409 library_manager_system. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-124590/ (Markdown: https://insights.sbomify.com/CVE-2026-124590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-124590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-124590
- OSV: https://osv.dev/vulnerability/CVE-2026-124590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-124590/
Summaries are generated and may contain mistakes; the official description above is the record.