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.

⚡ Watch aws-healthomics-mcp-server

Get an email when a new aws-healthomics-mcp-server advisory drops — max one per day, one-click unsubscribe.

Details

Source: AWS Security Bulletins (INTL · vendor-psirt · site)
Severity: unknown
Published: 2026-08-20
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-2026-154150.35% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-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

Recent advisories for - Path traversal

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-89485: In the Linux kernel, the following vulnerability has been resolved: lockd: pin next file acros…nvd · 2026-09-11
highCVE-2026-77807: The AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress…nvd · 2026-09-11
unknownCVE-2026-76652: An authenticated directory traversal vulnerability in file upload functionality has been ident…nvd · 2026-09-10
mediumCVE-2026-18386: The WP BackItUp Community Edition plugin for WordPress is vulnerable to Directory Traversal in…nvd · 2026-09-10
highCVE-2026-15019: The Direct Download for WooCommerce plugin for WordPress is vulnerable to Directory Traversal …nvd · 2026-09-10
mediumGHSA-mmg6-4qmv-6pc8: Infracost: Arbitrary file read via config-template readFile symlink traversalghsa · 2026-09-08