---
id: CVE-2026-97875
title: >-
  Rojo's "rojo serve" HTTP API (default port 34872) has no Host/Origin header
  validation, making it vulnerable to DNS rebinding
summary: >-
  Rojo's "rojo serve" HTTP API (default port 34872) has no Host/Origin header
  validation, making it vulnerable to DNS rebinding. A malicious webpage can
  read all project source, write malicious code to files on disk, and launch
  local progr…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-350
vendor: rojo-rbx
product: rojo
affected:
  - rojo < 7.7.0
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T17:17:21.657'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-97875'
references:
  - url: 'https://github.com/rojo-rbx/rojo/pull/1270'
    label: 74b3a70d-cca6-4d34-9789-e83b222ae3be
  - url: 'https://osv.dev/vulnerability/RUSTSEC-2026-0279'
    label: 74b3a70d-cca6-4d34-9789-e83b222ae3be
  - url: 'https://rustsec.org/advisories/RUSTSEC-2026-0279.html'
    label: 74b3a70d-cca6-4d34-9789-e83b222ae3be
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-25T16:38:52.187526Z'
ingestedAt: '2026-09-25T11:06:38.802Z'
---

## Overview

Rojo's "rojo serve" HTTP API (default port 34872) has no Host/Origin header validation, making it vulnerable to DNS rebinding. A malicious webpage can read all project source, write malicious code to files on disk, and launch local programs via opener::open() with no user interaction beyond visiting the page.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.