# CVE-2026-97360: HFS2 2.4.0 Unauthenticated Arbitrary File Read/Write via Template Engine

> Unauthenticated attackers can read, write, or delete arbitrary files on the host via path traversal in the template engine, compromising system integrity.

- **Severity:** Critical 10.0 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-3j4w-pf2p-gw5r

## What is CVE-2026-97360?

CVE-2026-97360 is a critical path traversal vulnerability in rejetto hfs2, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

HFS2 version 2.4.0 and earlier contains an unauthenticated arbitrary file access vulnerability that allows unauthenticated attackers to read, write, append, and delete files anywhere the HFS service account has filesystem access outside the shared folder. Attackers can exploit the macro dispatcher's lack of authorization model combined with the path resolver's failure to confine absolute paths to manipulate the template engine and compromise the confidentiality, integrity, and availability of the host.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-97360?


## How do I fix CVE-2026-97360?

No fix has been published for CVE-2026-97360 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-97360 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-97360 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-97360 and fix it if it is affected.

What it is: CVE-2026-97360 is a critical path traversal vulnerability in rejetto hfs2, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-97360 exists.

Affected product: rejetto hfs2. 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-2026-97360/ (Markdown: https://insights.sbomify.com/CVE-2026-97360/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-97360
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-97360
- OSV: https://osv.dev/vulnerability/CVE-2026-97360

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-97360/
Summaries are generated and may contain mistakes; the official description above is the record.