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.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
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.
Which versions are affected by CVE-2026-7404?
3 open source packages ship an affected version, including mcpo-simple-server.
| Package | 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.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-7404 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7404 exists.
Sources
Also known as GHSA-3jmq-qhg3-f58j, PYSEC-2026-2632.