CVE-2026-53611

9.8 criticalEPSS 2.0%

Critical (9.8). EPSS 2.0% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.8 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 2.0% chance of exploitation in the next 30 days; higher than 80% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-09-02
Modified: 2026-09-09
Record from: the NVD, synced 2026-10-19

References

https://github.com/AS203038/looking-glass/releases/tag/1.3.5
https://github.com/AS203038/looking-glass/security/advisories/GHSA-8hgf-p844-425m

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