Critical SEVERITY — Vulnerability

CVE-2026-45695 — Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-en

Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-end encryption, compression, and data deduplication. Prior to 0.23.0, Kopia's HTTP server started with --without-password accepts unauthenticated requests to /api/v1/repo/exists and forwards attacker-supplied SFTP storage configuration to blob.NewStorage, where externalSSH: true and sshArguments containing -oProxyCommand=<cmd> can cause exec.CommandContext("ss

Platform
Windows Server
CVE Record
CVE-2026-45695
CVSS Score
9.8/10
Published
16 July 2026
Views
40
Primary source: Review the official advisory at nvd.nist.gov Go to Source

Summary

Kopia is a cross-platform backup tool for Windows, macOS, and Linux with fast incremental backups, client-side end-to-end encryption, compression, and data deduplication. Prior to 0.23.0, Kopia's HTTP server started with --without-password accepts unauthenticated requests to /api/v1/repo/exists and forwards attacker-supplied SFTP storage configuration to blob.NewStorage, where externalSSH: true and sshArguments containing -oProxyCommand=<cmd> can cause exec.CommandContext("ssh") to invoke the command through OpenSSH. This issue is fixed in version 0.23.0.

Assessment

  • CVE: CVE-2026-45695
  • CVSS taban puanı: 9.8
  • Vektör: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Kaynak: NVD kaydı

References

Action

  • Etkilenen sistemleri envanterden doğrulayın
  • Üretici yamasını bakım penceresinde uygulayın
  • Yama uygulanana kadar erişimi ağ katmanında kısıtlayın

Windows Server — Related Advisories

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