# CVE-2026-56446: Authenticated Remote Code Execution via Arbitrary NDJSON Error Log Path in MISP

> Authenticated site administrators can achieve remote code execution by configuring the NDJSON error log to a web-accessible PHP file and injecting code via log entries.

- **Severity:** High 8.7 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Jun 2026
- **Updated:** 23 Jun 2026
- **Also known as:** GHSA-7v9f-64q7-x2jg

## What is CVE-2026-56446?

CVE-2026-56446 is a high-severity code injection vulnerability in Misp-Project Misp, published on 22 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

MISP allowed a site administrator to configure an arbitrary filesystem path for the NDJSON error log used by JsonLogTool. Because log entries can include attacker-controlled content, an authenticated attacker with site administrator privileges could direct log output to a PHP file in a web-accessible directory and inject PHP code through logged data. Accessing the resulting file could lead to remote code execution with the privileges of the web server process.

The fix restricts log destinations to existing directories beneath APP/tmp/logs or /var/log, requires absolute paths, rejects stream wrappers and traversal-related input, and limits filenames to .log or .ndjson extensions while disallowing executable extension segments.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-56446?

It affects 1 product.


Products: Misp-Project Misp.

## How do I fix CVE-2026-56446?

No fix has been published for CVE-2026-56446 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-56446 being exploited?

There is no known exploitation of CVE-2026-56446 in the wild and no public exploit code.

## Other vulnerabilities in Misp-Project Misp

- [CVE-2024-46918](https://insights.sbomify.com/CVE-2024-46918/): Missing authorization in n/a (critical 9.8)
- [CVE-2024-45509](https://insights.sbomify.com/CVE-2024-45509/): Missing authorization in n/a (critical 9.8)
- [CVE-2024-29858](https://insights.sbomify.com/CVE-2024-29858/): File upload in n/a (critical 9.8)
- [CVE-2024-29859](https://insights.sbomify.com/CVE-2024-29859/): File upload in n/a (critical 9.8)
- [CVE-2024-25674](https://insights.sbomify.com/CVE-2024-25674/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-56446 and fix it if it is affected.

What it is: CVE-2026-56446 is a high-severity code injection vulnerability in Misp-Project Misp, published on 22 Jun 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-56446 in the wild and no public exploit code.

Affected product: Misp-Project Misp. 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-2026-56446/ (Markdown: https://insights.sbomify.com/CVE-2026-56446/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-56446
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-56446
- OSV: https://osv.dev/vulnerability/CVE-2026-56446

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-56446/
Summaries are generated and may contain mistakes; the official description above is the record.