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

unknownCVE-2026-15415

Bulletin ID: 2026-060-AWS Scope: AWS Content Type: Important (requires attention) / Informational Publication Date: 07/17/2026 12:45 PM PDT 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. We identified CVE-2026-15415, where 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. Impacted versions: aws-healthomics-mcp-server <= 0.0.35 Please refer to the article below for the most up-to-date and complete information related to this AWS Security Bulletin.

CSIRTS triage

vendor: AWS product: aws-healthomics-mcp-server Path traversalOtheraffected: <= 0.0.35

What: Improper limitation of a pathname allows arbitrary file writes.
Who is affected: Deployments of aws-healthomics-mcp-server version 0.0.35 and earlier.
Urgency: Remediation is important due to potential exploitation of arbitrary file writes.
Action: Upgrade to aws-healthomics-mcp-server version 0.0.36 or later.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: AWS Security Bulletins (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-07-17
Exploitation: Not in CISA KEV at last sync

Original advisory: https://aws.amazon.com/security/security-bulletins/rss/2026-060-aws/

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-154150.25% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 16% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-15415	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

mediumCVE-2026-15415: AWS HealthOmics is a HIPAA-eligible service that fully manages the compute, storage, and workf…nvd

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