CVEvulnerability

CVE-2026-45695

9.8 CRITICAL Published 2026-07-16 Modified 2026-07-16 Official page ↗
Status
Deferred
Published
2026-07-16
Last modified
2026-07-16
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-306, CWE-78

Description

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.

Related

Weakness · CWE (2)

  • CWE-306 Missing Authentication for Critical Functionality weakness
  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References