# CVE-2026-104081: KodExplorer < 4.55 Path Traversal via unzip_pre_name() ZIP Extraction

> Authenticated attackers can exploit path traversal in ZIP extraction to overwrite files, leading to stored XSS, admin takeover, and remote code execution.

- **Severity:** High 7.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Oct 2026
- **Updated:** 9 Oct 2026
- **Also known as:** GHSA-fq3j-vm9f-qx52

## What is CVE-2026-104081?

CVE-2026-104081 is a high-severity path traversal vulnerability in kalcaddle KodExplorer, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

KodExplorer before 4.55 contains a path traversal vulnerability in the unzip_pre_name() function within app/function/helper.function.php, where a single non-recursive str_replace() sanitization pass can be bypassed using crafted filenames like "....//", combined with PclZip's extract() call in KodArchive.class.php lacking the PCLZIP_OPT_EXTRACT_DIR_RESTRICTION option. Authenticated attackers can upload a malicious ZIP archive with traversal sequences to overwrite arbitrary files such as core JavaScript assets, enabling stored XSS that leads to admin account takeover and subsequent remote code execution via unrestricted PHP file upload.

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

## Which versions are affected by CVE-2026-104081?


## How do I fix CVE-2026-104081?

No fix has been published for CVE-2026-104081 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-104081 being exploited?

There is no known exploitation of CVE-2026-104081 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-104081 and fix it if it is affected.

What it is: CVE-2026-104081 is a high-severity path traversal vulnerability in kalcaddle KodExplorer, published on 9 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-104081 in the wild and no public exploit code.

Affected product: kalcaddle KodExplorer. 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-2026-104081/ (Markdown: https://insights.sbomify.com/CVE-2026-104081/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-104081
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-104081
- OSV: https://osv.dev/vulnerability/CVE-2026-104081

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-104081/
Summaries are generated and may contain mistakes; the official description above is the record.