# CVE-2025-13806: nutzam NutzBoot Transaction API EthModule.java improper authorization

> Attackers can bypass authorization checks in the Transaction API to perform unauthorized actions, requiring an upgrade to the NutzBoot library.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 1 Dec 2025
- **Updated:** 24 Feb 2026
- **Also known as:** GHSA-53v5-9752-qq92

## What is CVE-2025-13806?

CVE-2025-13806 is a medium-severity missing authorization vulnerability in nutzam NutzBoot, published on 1 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A security vulnerability has been detected in nutzam NutzBoot up to 2.6.0-SNAPSHOT. This impacts an unknown function of the file nutzboot-demo/nutzboot-demo-simple/nutzboot-demo-simple-web3j/src/main/java/io/nutz/demo/simple/module/EthModule.java of the component Transaction API. The manipulation of the argument from/to/wei leads to improper authorization. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used.

Weakness: CWE-863 (Incorrect Authorization), CWE-285 (Improper Authorization), CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2025-13806?

2 open source packages ship an affected version, including org.nutz:nutzboot-parent. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `org.nutz:nutzboot-parent` | Maven | All versions to 2.6.0-SNAPSHOT | None |
| `org.nutz:nutzboot-parent` | Maven | All versions to 2.6.0-SNAPSHOT | None |

Products: Nutzam Nutzboot.

## How do I fix CVE-2025-13806?

No fix has been published for CVE-2025-13806 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13806 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13806 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13806 and fix it if it is affected.

What it is: CVE-2025-13806 is a medium-severity missing authorization vulnerability in nutzam NutzBoot, published on 1 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-13806 exists.

Affected packages and fixed versions:
- org.nutz:nutzboot-parent (Maven): affected all versions up to 2.6.0-SNAPSHOT; no fix listed
- org.nutz:nutzboot-parent (Maven): affected all versions up to 2.6.0-SNAPSHOT; no fix listed

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-2025-13806/ (Markdown: https://insights.sbomify.com/CVE-2025-13806/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13806
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13806
- OSV: https://osv.dev/vulnerability/CVE-2025-13806

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-13806/
Summaries are generated and may contain mistakes; the official description above is the record.