DNS rebinding vulnerability in rojo serve HTTP API (CVE-2026-97875) | HOL Guard CVE

High · CVSS 8.1CVE-2026-97875

DNS rebinding vulnerability in rojo serve HTTP API

Answer in brief

CVE-2026-97875 records a High severity (CVSS 8.1) vulnerability in DNS rebinding vulnerability in rojo serve HTTP API. The current sources do not mark it as known exploited. The current feed maps rojo-rbx/rojo (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 25, 2026Updated Sep 25, 2026Source checked Sep 25, 2026First seen by HOL Sep 25, 2026Material review Sep 25, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps rojo-rbx/rojo (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
rojo-rbx/rojogeneric	>=0 <7.7.0	7.7.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for rojo-rbx/rojo.
Review the reported fix. Update rojo-rbx/rojo to 7.7.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 25, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 25, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.