CVE-2026-53611: CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') in AS203038 looking-glass
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.
CVSS v3.1
Score 9.8critical
Affected software
AS203038
looking-glass
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Looking Glass is a stateless network-diagnostic platform implemented as a single Go binary that interfaces with routers over SSH and provides network diagnostic functions via gRPC API, web UI, and CLI. Versions prior to 1.3.5 contain an OS Command Injection vulnerability caused by an unanchored regular expression in the input validation layer, which fails to properly neutralize special elements in user input. This flaw enables remote attackers to execute arbitrary operating system commands. The vulnerability has been fixed in version 1.3.5.
Potential Impact
Successful exploitation allows unauthenticated remote attackers to execute arbitrary OS commands with the privileges of the looking-glass process, potentially leading to full system compromise. The CVSS score of 9.8 reflects high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade to looking-glass version 1.3.5 or later, where the OS Command Injection vulnerability has been patched. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-09T19:39:52.405Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a984d61acd9273b4973eaa6
Added to database: 09/02/2026, 16:22:57 UTC
Last enriched: 09/07/2026, 13:38:51 UTC
Last updated: 10/17/2026, 18:48:20 UTC
Views: 76
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