# CVE-2026-96884: MantisZip Preview MainWindow.UI.cs Path.Combine path traversal

> Remote attackers can exploit a path traversal flaw in MantisZip's preview component to read or modify arbitrary files on the victim's system.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 24 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-8wpp-hqmp-mx7v

## What is CVE-2026-96884?

CVE-2026-96884 is a medium-severity path traversal vulnerability in MantisZip, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A security flaw has been discovered in MantisZip up to 0.4.5. Affected by this issue is the function Path.Combine of the file MainWindow.UI.cs of the component Preview. The manipulation results in path traversal. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-96884?


## How do I fix CVE-2026-96884?

No fix has been published for CVE-2026-96884 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-96884 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-96884 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-96884 and fix it if it is affected.

What it is: CVE-2026-96884 is a medium-severity path traversal vulnerability in MantisZip, published on 24 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-96884 exists.

Affected product: MantisZip. 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-2026-96884/ (Markdown: https://insights.sbomify.com/CVE-2026-96884/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-96884
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-96884
- OSV: https://osv.dev/vulnerability/CVE-2026-96884

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-96884/
Summaries are generated and may contain mistakes; the official description above is the record.