# CVE-2026-7398: florensiawidjaja BioinfoMCP Upload Endpoint app.py upload path traversal

> Remote attackers can exploit a path traversal flaw in the upload endpoint to read or modify arbitrary files on the server.

- **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:** 29 Apr 2026
- **Updated:** 30 Apr 2026
- **Also known as:** GHSA-qgpx-r48j-vhhm

## What is CVE-2026-7398?

CVE-2026-7398 is a medium-severity path traversal vulnerability in florensiawidjaja BioinfoMCP, published on 29 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A weakness has been identified in florensiawidjaja BioinfoMCP up to 7ada7918b9e515604d3c0ae264d3a9af10bf6e54. This vulnerability affects the function Upload of the file bioinfo_mcp_platform/app.py of the component Upload Endpoint. This manipulation of the argument Name causes path traversal. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-7398?


## How do I fix CVE-2026-7398?

No fix has been published for CVE-2026-7398 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7398 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7398 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7398 and fix it if it is affected.

What it is: CVE-2026-7398 is a medium-severity path traversal vulnerability in florensiawidjaja BioinfoMCP, published on 29 Apr 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-2026-7398 exists.

Affected product: florensiawidjaja BioinfoMCP. 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-2026-7398/ (Markdown: https://insights.sbomify.com/CVE-2026-7398/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7398
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7398
- OSV: https://osv.dev/vulnerability/CVE-2026-7398

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7398/
Summaries are generated and may contain mistakes; the official description above is the record.