# CVE-2026-1066: kalcaddle kodbox Compression zip command injection

> Remote attackers can execute arbitrary commands via the compression handler in kodbox, requiring authentication.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **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:** 17 Jan 2026
- **Updated:** 23 Feb 2026
- **Also known as:** GHSA-998w-jcr6-gwpq

## What is CVE-2026-1066?

CVE-2026-1066 is a medium-severity command injection vulnerability in kalcaddle kodbox, published on 17 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was detected in kalcaddle kodbox up to 1.61.10. This issue affects some unknown processing of the file /?explorer/index/zip of the component Compression Handler. The manipulation results in command injection. The attack may be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-1066?

It affects 1 product.


Products: Kodcloud Kodbox.

## How do I fix CVE-2026-1066?

No fix has been published for CVE-2026-1066 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-1066 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1066 exists.

## Other vulnerabilities in kalcaddle kodbox

- [CVE-2023-39691](https://insights.sbomify.com/CVE-2023-39691/): Missing authorization in n/a (critical 9.8)
- [CVE-2023-48028](https://insights.sbomify.com/CVE-2023-48028/): Information disclosure in n/a (critical 9.8)
- [CVE-2023-29790](https://insights.sbomify.com/CVE-2023-29790/): Information disclosure in n/a (high 7.5)
- [CVE-2023-6848](https://insights.sbomify.com/CVE-2023-6848/): kalcaddle kodbox index.class.php check command injection (high 7.3)
- [CVE-2023-6849](https://insights.sbomify.com/CVE-2023-6849/): kalcaddle kodbox app.php cover server-side request forgery (high 7.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-1066 and fix it if it is affected.

What it is: CVE-2026-1066 is a medium-severity command injection vulnerability in kalcaddle kodbox, published on 17 Jan 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1066 exists.

Affected product: kalcaddle kodbox. 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-2026-1066/ (Markdown: https://insights.sbomify.com/CVE-2026-1066/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-1066
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-1066
- OSV: https://osv.dev/vulnerability/CVE-2026-1066

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-1066/
Summaries are generated and may contain mistakes; the official description above is the record.