Kopia Server 0.23.0 - Remote Code Execution

Kopia before version 0.23.0 allows unauthenticated remote code execution when started in server mode with the --without-password flag. When the /api/v1/repo/exists endpoint is exposed, it enables instantiation of the SFTP storage backend with user-supplied sshArguments. Due to improper argument...

CVE-2026-124029

Kopia versions through 0.23.1 are affected by a path traversal vulnerability within the copyDirectoryContent function. This flaw allows users with repository write access to escape the designated restore directory by using crafted entry names, such as '..' , in directory manifest entries. Consequ...

EUVD-2026-118437

Kopia through 0.23.1 contains a path traversal vulnerability in copyDirectoryContent that allows users with repository write access to escape the restore directory via crafted entry names. Attackers can create snapshots whose directory manifest entries are named '..', so victims restoring with...

CVE-2026-124029 Kopia through 0.23.1 Path Traversal in Snapshot Restore via Directory Entry Names

Kopia through 0.23.1 contains a path traversal vulnerability in copyDirectoryContent that allows users with repository write access to escape the restore directory via crafted entry names. Attackers can create snapshots whose directory manifest entries are named '..', so victims restoring with...

VulnCheck KEV: CVE-2026-45695

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 a...

CVE-2026-45695

A flaw was found in Kopia, a cross-platform backup tool. An unauthenticated remote attacker can exploit the HTTP server, when started without a password, by sending specially crafted requests to the /api/v1/repo/exists endpoint. This allows the attacker to forward malicious SFTP storage...

CVE-2026-45695

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 a...

CVE-2026-45695

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 a...

CVE-2026-45695 Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used

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 a...

CVE-2026-45695

The Kopia backup tool (versions prior to 0.23.0 ) is vulnerable to unauthenticated remote code execution (RCE) when the HTTP server is started with the --without-password flag. An attacker can send specially crafted requests to the /api/v1/repo/exists endpoint to inject malicious SFTP storage con...

CVE-2026-45695

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 a...

CVE-2026-45695 Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used

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 a...

CVE-2026-45695 Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used

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 a...

CVE-2026-45695: Improper Neutralization of Special Elements used in an OS Command

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 a...

GO-2026-5009 Kopia: RCE via SSH ProxyCommand Injection in github.com/kopia/kopia

Kopia: RCE via SSH ProxyCommand Injection in github.com/kopia/kopia...

Arbitrary Command Injection

Overview Affected versions of this package are vulnerable to Arbitrary Command Injection via the ProxyCommand process. An attacker can execute arbitrary commands on the system by injecting malicious input into the SSH ProxyCommand configuration. Remediation Upgrade...

Arbitrary Command Injection

Overview Affected versions of this package are vulnerable to Arbitrary Command Injection via the ProxyCommand process. An attacker can execute arbitrary commands on the system by injecting malicious input into the SSH ProxyCommand configuration. Remediation Upgrade github.com/kopia/kopia/cli to...

PT-2026-42385

Kopia: RCE via SSH ProxyCommand Injection in github.com/kopia/kopia...

GHSA-2Q4C-3MRW-63C3 Kopia: RCE via SSH ProxyCommand Injection

Summary Kopia's HTTP server, when started with --without-password , accepts unauthenticated requests to /api/v1/repo/exists. The handler forwards an attacker-supplied storage configuration to blob.NewStorage. For SFTP backends with externalSSH: true, that path constructs a process command line by...

Kopia: RCE via SSH ProxyCommand Injection

Summary Kopia's HTTP server, when started with --without-password , accepts unauthenticated requests to /api/v1/repo/exists. The handler forwards an attacker-supplied storage configuration to blob.NewStorage. For SFTP backends with externalSSH: true, that path constructs a process command line by...