Vulnerability Database

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CVE-2026-62302

Missing Authentication for Critical Function

MyTube is a self-hosted downloader and player for several video websites. Prior to version 1.10.3, server.ts calls registerStaticRoutes and registerCloudRoutes before registerApiRoutes, where authMiddleware and roleBasedAuthMiddleware are mounted. Because Express processes middleware in registration order, staticRoutes.ts and cloudRoutes.ts remain outside the authentication stack even when loginEnabled=true. Unauthenticated clients can access local videos through /videos/*, thumbnails through /images/* and /images-small/*, avatars through /avatars/*, subtitles through /subtitles/*, cloud thumbnail caches through /api/cloud/thumbnail-cache/*, and cloud signed URLs or redirects through /cloud/videos/:filename and /cloud/images/:filename. The frontend login wall does not protect direct media requests. Cloud routes return 404 when cloud storage is unconfigured, but that is not an authentication rejection; protected API routes correctly return 401. Combined with hidden-video path leaks, the flaw permits unauthenticated downloads of hidden media. Default loginEnabled=false single-user deployments have no authentication boundary to bypass. This issue is fixed in version 1.10.3.

  • Published: Oct 30, 2026
  • Updated: Nov 8, 2026
  • CVE: CVE-2026-62302
  • Severity: High
  • Exploit:
  • CISA KEV:

No technical information available.

CWEs:

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Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

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