---
id: CVE-2026-53611
title: >-
  Looking Glass is a modern, stateless network-diagnostic platform — a single
  self-contained Go binary that fronts a fleet of routers over SSH and exposes
  ping / traceroute / BGP lookups through a gRPC (ConnectRPC) API, an embedded
  SvelteK…
summary: >-
  Looking Glass is a modern, stateless network-diagnostic platform — a single
  self-contained Go binary that fronts a fleet of routers over SSH and exposes
  ping / traceroute / BGP lookups through a gRPC (ConnectRPC) API, an embedded
  SvelteK…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
published: '2026-09-02'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53611'
references:
  - url: 'https://github.com/AS203038/looking-glass/releases/tag/1.3.5'
    label: security-advisories@github.com
  - url: >-
      https://github.com/AS203038/looking-glass/security/advisories/GHSA-8hgf-p844-425m
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.01975
epssPercentile: 0.79581
ingestedAt: '2026-09-09T21:22:45.563Z'
---

## Overview

Looking Glass is a modern, stateless network-diagnostic platform — a single self-contained Go binary that fronts a fleet of routers over SSH and exposes ping / traceroute / BGP lookups through a gRPC (ConnectRPC) API, an embedded SvelteKit web UI, and a lg-cli client. Prior to version 1.3.5, there is an OS Command Injection vulnerability resulting from an unanchored regular expression in the input validation layer. This issue has been patched in version 1.3.5.

## Remediation

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