# CVE-2026-15415: Path traversal and arbitrary file write in the workflow linters of aws-healthomics-mcp-server

> An attacker can write arbitrary files outside the intended directory via path traversal in the workflow linters of the AWS HealthOmics MCP Server.

- **Severity:** Medium 6.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Jul 2026
- **Updated:** 11 Aug 2026

## What is CVE-2026-15415?

CVE-2026-15415 is a medium-severity path traversal vulnerability in aws-healthomics-mcp-server, published on 17 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

AWS HealthOmics is a HIPAA-eligible service that fully manages the compute, storage, and workflow engine infrastructure required to run bioinformatics analyses at scale for clinical diagnostics, drug discovery, and agricultural research.

Improper limitation of a pathname to a restricted directory in the linting tools of the AWS HealthOmics MCP Server (aws-healthomics-mcp-server) before version 0.0.36 might allow an actor who can influence the MCP agent to write an actor-controlled content to arbitrary locations outside the intended workflow bundle directory, via directory traversal sequences in the workflow_files input.

To remediate this issue, users should upgrade to version 0.0.36 or later.

Weakness: CWE-23 (Relative Path Traversal)

## Which versions are affected by CVE-2026-15415?


## How do I fix CVE-2026-15415?

No fix has been published for CVE-2026-15415 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-15415 being exploited?

There is no known exploitation of CVE-2026-15415 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-15415 and fix it if it is affected.

What it is: CVE-2026-15415 is a medium-severity path traversal vulnerability in aws-healthomics-mcp-server, published on 17 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-15415 in the wild and no public exploit code.

Affected product: aws-healthomics-mcp-server. 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-2026-15415/ (Markdown: https://insights.sbomify.com/CVE-2026-15415/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-15415
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-15415
- OSV: https://osv.dev/vulnerability/CVE-2026-15415

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-15415/
Summaries are generated and may contain mistakes; the official description above is the record.