CVE-2026-53611 Looking Glass: Remote Code Execution via Unanchored Regular Expression in BGPASPath Input Validation
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-53611?
CVE-2026-53611 is a critical vulnerability in AS203038 looking-glass, published on 2 Sep 2026.
Official description
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.
Weakness: CWE-78
Which versions are affected by CVE-2026-53611?
How do I fix CVE-2026-53611?
No fix has been published for CVE-2026-53611 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-53611 being exploited?
There is no known exploitation of CVE-2026-53611 in the wild and no public exploit code.
Sources
Also known as GHSA-8hgf-p844-425m.