---
id: CVE-2026-97359
title: >-
  HFS2 version 2.4.0 and earlier contains a template injection vulnerability in
  the multipart upload handler that allows unauthenticated attackers to achieve
  remote code execution by embedding malicious template syntax in a filename
summary: >-
  HFS2 version 2.4.0 and earlier contains a template injection vulnerability in
  the multipart upload handler that allows unauthenticated attackers to achieve
  remote code execution by embedding malicious template syntax in a filename.
  Attac…
severity: critical
cvss: 10
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-1336
vendor: rejetto
product: hfs2
affected:
  - hfs2 >= 2.0.0 <= 2.4.0
published: '2026-09-24'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:08:55.030'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97359'
references:
  - url: >-
      https://github.com/wgetnz/hfs2/blob/master/advisories/hfs2-upload-filename-template-injection/README.md
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/hfs2-rce-via-multipart-upload-filename-template-injection
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-24T13:43:25.674Z'
---

## Overview

HFS2 version 2.4.0 and earlier contains a template injection vulnerability in the multipart upload handler that allows unauthenticated attackers to achieve remote code execution by embedding malicious template syntax in a filename. Attackers can craft a filename containing a closing template quoting sequence followed by an exec macro, which bypasses the authorization check in the dispatcher to execute arbitrary commands on the underlying host system.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.