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CVE-2026-45695

Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
kopia / kopiaaffected < 0.23.0

CWE

CWE-78, CWE-306

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.