CVE-2026-53611: Looking Glass: Remote Code Execution via Unanchored Regular Expression in BGPASPath Input Validation
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 Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Looking Glassto a version that resolves this vulnerability.Fixed in 1.3.5
Event History
Frequently Asked Questions
Which deployments are affected?
Looking Glass deployments running versions earlier than 1.3.5 are affected. Version 1.3.5 contains the patch.
Does exploitation require authentication or user interaction?
No. The severity vector indicates network-reachable exploitation with low attack complexity, no privileges required, and no user interaction.
What is the potential impact of successful exploitation?
Successful exploitation can result in remote OS command execution. The provided severity vector rates confidentiality, integrity, and availability impact as high.