Bug 2501364 (CVE-2026-45695) - CVE-2026-45695 github.com/kopia/kopia: Kopia: Arbitrary code execution via unauthenticated SFTP configuration in HTTP server.
Summary: CVE-2026-45695 github.com/kopia/kopia: Kopia: Arbitrary code execution via un...
Keywords:
Status: NEW
Alias: CVE-2026-45695
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
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URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-16 16:02 UTC by OSIDB Bzimport
Modified: 2026-07-29 17:08 UTC (History)
9 users (show)

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Description OSIDB Bzimport 2026-07-16 16:02:00 UTC 
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.
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