# CVE-2026-19330: angrysky56 advanced-reasoning-mcp index.ts switch_memory_library path traversal

> Local attackers can exploit path traversal in the memory library switching function to read or modify arbitrary files.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Aug 2026
- **Updated:** 14 Aug 2026
- **Also known as:** GHSA-rgqf-fgw4-cmhv

## What is CVE-2026-19330?

CVE-2026-19330 is a medium-severity path traversal vulnerability in angrysky56 advanced-reasoning-mcp, published on 9 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was determined in angrysky56 advanced-reasoning-mcp 1.0.0. The impacted element is the function create_system_json/create_library to get_system_json/switch_memory_library of the file src/index.ts. This manipulation causes path traversal. The attack requires local access. 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-2026-19330?


## How do I fix CVE-2026-19330?

No fix has been published for CVE-2026-19330 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-19330 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19330 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-19330 and fix it if it is affected.

What it is: CVE-2026-19330 is a medium-severity path traversal vulnerability in angrysky56 advanced-reasoning-mcp, published on 9 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19330 exists.

Affected product: angrysky56 advanced-reasoning-mcp. 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-2026-19330/ (Markdown: https://insights.sbomify.com/CVE-2026-19330/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-19330
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-19330
- OSV: https://osv.dev/vulnerability/CVE-2026-19330

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-19330/
Summaries are generated and may contain mistakes; the official description above is the record.