CVE-2026-53611CWE-78command-injection

CVE-2026-53611

Critical · published September 2, 2026

CVSS v3.1
9.8
EPSS
2%
Percentile
80.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01975 · 80.3th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-09-02T20:17Z
References (2)
https://github.com/AS203038/looking-glass/releases/tag/1.3.5 · [email protected]https://github.com/AS203038/looking-glass/security/advisories/GHSA-8hgf-p844-425m · [email protected]
EPSS history
Timeline
  • 04 SEP 03:42Z
    EPSS moved — → 1%
    epss
  • 02 SEP 16:06Z
    Looking Glass: Remote Code Execution via Unanchored Regular Expression in BGPASPath Input Validation
    cvelistv5