# CVE-2024-39780: Use of unsafe yaml load in dynparam

> A YAML deserialization flaw in ROS dynparam allows local or remote attackers to execute arbitrary Python code via crafted input.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 2 Apr 2025
- **Updated:** 18 Jun 2025
- **Also known as:** DEBIAN-CVE-2024-39780, GHSA-92fv-mr4v-6fw4, UBUNTU-CVE-2024-39780

## What is CVE-2024-39780?

CVE-2024-39780 is a high-severity unsafe deserialization vulnerability in Open Source Robotics Foundation Robot Operating System (ROS), published on 2 Apr 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A YAML deserialization vulnerability was found in the Robot Operating System (ROS) 'dynparam', a command-line tool for getting, setting, and deleting parameters of a dynamically configurable node, affecting ROS distributions Noetic and earlier. The issue is caused by the use of the yaml.load() function in the 'set' and 'get' verbs, and allows for the creation of arbitrary Python objects. Through this flaw, a local or remote user can craft and execute arbitrary Python code.

Weakness: CWE-502 (Deserialization of Untrusted Data), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2024-39780?

It affects 1 product.


Products: Openrobotics Robot Operating System.

## How do I fix CVE-2024-39780?

Apply the vendor's patch.

## Is CVE-2024-39780 being exploited?

There is no known exploitation of CVE-2024-39780 in the wild and no public exploit code.

## Other vulnerabilities in Open Source Robotics Foundation Robot Operating System (ROS)

- [CVE-2024-38921](https://insights.sbomify.com/CVE-2024-38921/): Use after free in n/a (critical 9.8)
- [CVE-2024-41644](https://insights.sbomify.com/CVE-2024-41644/): Privilege escalation in n/a (critical 9.8)
- [CVE-2024-41645](https://insights.sbomify.com/CVE-2024-41645/): Privilege escalation in n/a (critical 9.8)
- [CVE-2024-41646](https://insights.sbomify.com/CVE-2024-41646/): Code injection in n/a (critical 9.8)
- [CVE-2024-41647](https://insights.sbomify.com/CVE-2024-41647/): Code injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-39780 and fix it if it is affected.

What it is: CVE-2024-39780 is a high-severity unsafe deserialization vulnerability in Open Source Robotics Foundation Robot Operating System (ROS), published on 2 Apr 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-39780 in the wild and no public exploit code.

Affected product: Open Source Robotics Foundation Robot Operating System (ROS). 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-2024-39780/ (Markdown: https://insights.sbomify.com/CVE-2024-39780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-39780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-39780
- OSV: https://osv.dev/vulnerability/CVE-2024-39780

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-39780/
Summaries are generated and may contain mistakes; the official description above is the record.