# CVE-2026-110108: MateCloud through 5.0.8 Missing Authorization via /api/v1/admin/storage API

> Authenticated users can bypass authorization to manage object storage, allowing them to read, delete, or upload files belonging to other users.

- **Severity:** High 8.6 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/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:** 13 Oct 2026
- **Updated:** 14 Oct 2026
- **Also known as:** GHSA-g49f-wwx4-j76v

## What is CVE-2026-110108?

CVE-2026-110108 is a high-severity missing authorization vulnerability in mateaix MateCloud, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

MateCloud through 5.0.8 contains a missing authorization vulnerability that allows any authenticated user to manage object storage by calling the unprotected /api/v1/admin/storage endpoints in StorageController. Low-privilege or self-registered users can supply arbitrary bucket and objectName values to list objects, obtain pre-signed download URLs for other users' files, delete objects, and upload at chosen keys.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-110108?


## How do I fix CVE-2026-110108?

No fix has been published for CVE-2026-110108 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-110108 being exploited?

There is no known exploitation of CVE-2026-110108 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-110108 and fix it if it is affected.

What it is: CVE-2026-110108 is a high-severity missing authorization vulnerability in mateaix MateCloud, published on 13 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-2026-110108 in the wild and no public exploit code.

Affected product: mateaix MateCloud. 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-2026-110108/ (Markdown: https://insights.sbomify.com/CVE-2026-110108/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-110108
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-110108
- OSV: https://osv.dev/vulnerability/CVE-2026-110108

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-110108/
Summaries are generated and may contain mistakes; the official description above is the record.