# CVE-2026-0589: code-projects Online Product Reservation System Administration Backend improper authentication

> Remote attackers can bypass authentication in the administration backend to gain unauthorized access and modify data.

- **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
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-x3wv-9jvw-qwq2

## What is CVE-2026-0589?

CVE-2026-0589 is a medium-severity authentication bypass vulnerability in code-projects Online Product Reservation System, published on 5 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was found in code-projects Online Product Reservation System 1.0. Impacted is an unknown function of the component Administration Backend. The manipulation results in improper authentication. The attack may be performed from remote. The exploit has been made public and could be used.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-0589?

It affects 1 product.


Products: Fabian Online Product Reservation System.

## How do I fix CVE-2026-0589?

No fix has been published for CVE-2026-0589 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-0589 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0589 exists.

## Other vulnerabilities in code-projects Online Product Reservation System

- [CVE-2026-0583](https://insights.sbomify.com/CVE-2026-0583/): code-projects Online Product Reservation System User Login login.php sql injection (medium 6.9)
- [CVE-2026-0585](https://insights.sbomify.com/CVE-2026-0585/): code-projects Online Product Reservation System GET Parameter order_view.php sql injection (medium 6.9)
- [CVE-2026-0592](https://insights.sbomify.com/CVE-2026-0592/): code-projects Online Product Reservation System User Registration register_code.php sql injection (medium 6.9)
- [CVE-2026-0575](https://insights.sbomify.com/CVE-2026-0575/): code-projects Online Product Reservation System Administrator Login adminlogin.php sql injection (medium 6.9)
- [CVE-2026-0576](https://insights.sbomify.com/CVE-2026-0576/): code-projects Online Product Reservation System Parameter prod.php sql injection (medium 6.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-0589 and fix it if it is affected.

What it is: CVE-2026-0589 is a medium-severity authentication bypass vulnerability in code-projects Online Product Reservation System, published on 5 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-0589 exists.

Affected product: code-projects Online Product Reservation 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-2026-0589/ (Markdown: https://insights.sbomify.com/CVE-2026-0589/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-0589
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-0589
- OSV: https://osv.dev/vulnerability/CVE-2026-0589

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-0589/
Summaries are generated and may contain mistakes; the official description above is the record.