VulncastBriefing archive

Daily Brief - 2026-10-18

· 4 vulnerabilities · 6 min listen

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CVE-2026-111853

high · CVSS 8.8 · Tektronix 3 Series MDO

An issue was discovered on Tektronix 3 Series MDO devices before 1.21.1. An OS command injection vulnerability exists in the FILESystem:MOUNT:DRIve SCPI command handler. Insufficient neutralization of user-supplied input allows remote attackers to execute arbitrary operating system commands with elevated privileges.

  • OS Command Injection
  • embedded system
  • scpi

CVE-2026-111911

critical · CVSS 9.8 · phpMyFAQ

phpMyFAQ 4.0.0 before 4.1.9 contains an authentication bypass vulnerability where WebAuthn registration endpoints attach credentials to any account without authentication or challenge validation. Attackers can stage a victim username, submit a forged fmt=none attestation to register a passkey, then log in bypassing passwords and TOTP for account takeover.

  • Authentication Bypass
  • php
  • web application

CVE-2026-111923

high · CVSS 7.5 · Fleet

Fleet before 4.89.0 contains an unbounded recursion vulnerability in Apple MDM enrollment property list parsing that allows unauthenticated attackers to crash the server. Attackers can send a crafted binary plist payload of about 150 bytes to the enrollment endpoints, triggering exponential allocation or infinite recursion that exhausts CPU and memory.

  • Denial of Service
  • Unbounded Recursion
  • web application
  • mdm
  • parsing

CVE-2026-111927

high · CVSS 7.7 · Coder

Coder before 2.29.20, 2.33.0 before 2.33.12, 2.34.0 before 2.34.8, and 2.35.0 before 2.35.4 contains an improper hostname validation flaw in GetWorkspaceProxyByHostname whose SIMILAR TO pattern performs a prefix match, so any domain that is a string prefix of a workspace-proxy access URL is trusted as a proxy. Attackers owning such a domain can lure an authenticated victim to a crafted /api/v2/applications/auth-redirect link, capture the redirected application_connect API key, and replay it to access the victim's workspace apps.

  • Improper Hostname Validation
  • Cross-Site Request Forgery
  • api
  • web application