Paper/Archive/CVE-2026-53611

CVE-2026-53611

AS203038 looking-glass — Looking Glass: Remote Code Execution via Unanchored Regular Expression in BGPASPath Input Validation

EPSS 2%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (CNA)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 80.5.805 × 2016.1 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

looking-glass< 1.3.5–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

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