What’s Vulnerable › Vulnerabilities

CVE-2026-53611: Looking Glass: Remote Code Execution via Unanchored Regular Expression in BGPASPath Input Validation

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-09
• Weakness: CWE-78

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.

Affected products

• AS203038 looking-glass: before 1.3.5

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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