# CVE-2026-10854: Unauthorized exposure of private galaxies in MISP event template creation

> Non-admin users can view private galaxy metadata from other organizations due to missing access controls in the event template builder.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/U:Green`)
- **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:** 4 Jun 2026
- **Updated:** 4 Jun 2026
- **Also known as:** GHSA-3636-3mqq-q7x9

## What is CVE-2026-10854?

CVE-2026-10854 is a medium-severity missing authorization vulnerability in Misp-Project Misp, published on 4 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A visibility control issue in the event template creation workflow allowed non-site-admin users to access private galaxies belonging to other organisations. The event template builder loaded all enabled galaxies without applying organisation or distribution-based access restrictions, potentially exposing private galaxy metadata such as galaxy type and description to users who should not have visibility.

The issue has been fixed by restricting galaxy queries for non-site-admin users to galaxies owned by the user’s organisation or galaxies with a non-private distribution setting. Site administrators retain visibility of all enabled galaxies.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2026-10854?

It affects 1 product.


Products: Misp-Project Misp.

## How do I fix CVE-2026-10854?

No fix has been published for CVE-2026-10854 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-10854 being exploited?

There is no known exploitation of CVE-2026-10854 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-2026-10854 and fix it if it is affected.

What it is: CVE-2026-10854 is a medium-severity missing authorization vulnerability in Misp-Project Misp, published on 4 Jun 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-2026-10854 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-2026-10854/ (Markdown: https://insights.sbomify.com/CVE-2026-10854/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-10854
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-10854
- OSV: https://osv.dev/vulnerability/CVE-2026-10854

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-10854/
Summaries are generated and may contain mistakes; the official description above is the record.