---
id: "CVE-2026-109097"
page: "https://infrastack.ai/live/CVE-2026-109097"
kind: "vulnerability"
aliases: ["CVE-2026-109097"]
title: "ROS#: unescaped message definition files let crafted input inject code"
severity: "high"
cvss: 8.6
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["csharp", "package", "robotics", "ros#"]
not_affected_if: ["fixed-message-definitions", "version-2.3.1-or-later"]
published_at: "2026-11-10T12:17:16+00:00"
first_seen_at: "2026-11-10T12:21:52+00:00"
updated_at: "2026-11-10T12:22:27+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109097", "first_seen_at": "2026-11-10T12:21:52+00:00"}]
exploit_sources: []
---

# ROS#: unescaped message definition files let crafted input inject code

Link for people: https://infrastack.ai/live/CVE-2026-109097 (this .md is for agents)

ROS# (a C# library for ROS robotics messaging) does not properly escape text in message definition files, so generated code can contain injected content. An attacker who can supply a crafted message definition file can inject arbitrary code into the generated program.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed ROS# version in the project's package or dependency files; the sources only say versions below `V2.3.1` are affected
- Look for any step in your build or code generation that consumes message definition files from untrusted sources

## Fix

- ROS#: move to `V2.3.1` or later (per the product range in NVD)

## Timeline

- 2026-11-10T12:21:52+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-109097

## From the sources

A vulnerability has been identified in ROS# (All versions < V2.3.1). Affected systems do not properly escape text of message definition files. This could allow an attacker that is able to pass a crafted message definition file to the user to inject arbitrary code into the generated program.

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_