# CVE-2026-7404: getsimpletool mcpo-simple-server base_manager.py delete_shared_prompt path traversal

> Remote attackers can exploit path traversal in delete_shared_prompt to read or modify files, affecting users of the mcpo-simple-server library.

- **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-3jmq-qhg3-f58j, PYSEC-2026-2632

## What is CVE-2026-7404?

CVE-2026-7404 is a medium-severity path traversal vulnerability in getsimpletool mcpo-simple-server, 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 getsimpletool mcpo-simple-server up to 0.2.0. Affected is the function delete_shared_prompt of the file src/mcpo_simple_server/services/prompt_manager/base_manager.py. This manipulation of the argument detail causes relative path traversal. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-23 (Relative Path Traversal), CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-7404?

3 open source packages ship an affected version, including mcpo-simple-server.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `mcpo-simple-server` | PyPI | All versions to 0.2.0 | None |
| `mcpo-simple-server` | PyPI | All versions to 0.2.0 | None |
| `mcpo-simple-server` | PyPI | All versions to 0.2.0 | None |

## How do I fix CVE-2026-7404?

No fix has been published for CVE-2026-7404 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7404 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7404 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7404 and fix it if it is affected.

What it is: CVE-2026-7404 is a medium-severity path traversal vulnerability in getsimpletool mcpo-simple-server, 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-2026-7404 exists.

Affected packages and fixed versions:
- mcpo-simple-server (PyPI): affected all versions up to 0.2.0; no fix listed
- mcpo-simple-server (PyPI): affected all versions up to 0.2.0; no fix listed
- mcpo-simple-server (PyPI): affected all versions up to 0.2.0; no fix listed

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-2026-7404/ (Markdown: https://insights.sbomify.com/CVE-2026-7404/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7404
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7404
- OSV: https://osv.dev/vulnerability/CVE-2026-7404

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7404/
Summaries are generated and may contain mistakes; the official description above is the record.