Metasploit Wrap Up: Belgian Waffles, Chocolates, and…Modules-Frites?
Vulnerability: GitLab's unauthenticated file read flaw (CVE-2026-85706) is under active exploitation, while new Metasploit modules target Windows IPv6 and Langflow RCE vulnerabilities.
Deep Analysis and Expert Commentary
The GitLab vulnerability allows attackers to exfiltrate sensitive data without authentication, impacting self-hosted instances running versions 18.7 through unpatched releases. Attackers can chain this with other exploits for lateral movement. Windows networks are vulnerable to DHCPv6 spoofing due to default IPv6 configurations accepting unauthorized DNS servers—a low-effort attack vector for network pivoting. Langflow's RCE stems from insufficient sandboxing of Python execution in custom components, a recurring pattern in AI/ML platforms. Mitigations include patching GitLab immediately, disabling IPv6 on Windows networks where unused, and auditing Langflow deployments for custom component risks.
Action Items
- Patch GitLab instances to versions addressing CVE-2026-85706 immediately
- Disable IPv6 on Windows networks or implement DHCPv6 guard protections
- Audit Langflow deployments for unauthorized custom component usage
Original Article Brief Intro
Rapid7 Blog · 2026-09-25 · Vulnerability: GitLab's unauthenticated file read flaw (CVE-2026-85706) is under active exploitation, while new Metasploit modules target Windows IPv6 and Langflow RCE vulnerabilities.
Related Terms and Notes
CVE IDs
- CVE-2026-85706 — Unauthenticated local file read vulnerability in GitLab allowing access to sensitive system files
Techniques / TTPs
- Langflow RCE
- RCE
Context Notes
- DHCPv6
- DHCPv6 spoofing — Attack technique where malicious DHCPv6 servers overwrite network clients' DNS settings
- GitLab
- GitLab exploit
- IPv6 DNS hijacking
- Metasploit
- Metasploit modules
- unauthorized file access