{"id":"CVE-2026-45695","summary":"Kopia: Unauthenticated RCE via SSH ProxyCommand Injection when --insecure --without-password is used","details":"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=\u003ccmd\u003e can cause exec.CommandContext(\"ssh\") to invoke the command through OpenSSH. This issue is fixed in version 0.23.0.","aliases":["GHSA-2q4c-3mrw-63c3","GO-2026-5009"],"modified":"2026-08-12T03:51:42.148226348Z","published":"2026-07-16T15:42:31.795Z","related":["openSUSE-SU-2026:21483-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-306","CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45695.json"},"references":[{"type":"WEB","url":"https://github.com/kopia/kopia/releases/tag/v0.23.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45695.json"},{"type":"ADVISORY","url":"https://github.com/kopia/kopia/security/advisories/GHSA-2q4c-3mrw-63c3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45695"},{"type":"FIX","url":"https://github.com/kopia/kopia/commit/c26c6a1b9734c5089217986ffa5cd19f8a6b8900"},{"type":"FIX","url":"https://github.com/kopia/kopia/pull/5354"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/kopia/kopia","events":[{"introduced":"0"},{"fixed":"c26c6a1b9734c5089217986ffa5cd19f8a6b8900"},{"fixed":"981d5f95ad7b64f834c46b7ac244d524644fbb46"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.23.0"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"versions":["v0.22.3","v0.22.2","v0.22.1","v0.22.0","v0.21.1","v0.21.0","v0.20.1","v0.20.0","v0.19.0","v0.18.2","v0.18.1","v0.18.0","v0.17.0","v0.16.1","v0.16.0","v0.15.0","v0.14.1","v0.14.0","v0.13.0","v0.13.0-rc2","v0.13.0-rc1","v0.12.1","v0.12.0","v0.11.3","v0.11.2","v0.11.1","v0.11.0","v0.10.7","v0.10.6","v0.10.5","v0.10.4","v0.10.3","v0.10.2","v0.10.1","v0.10.0","v0.9.8","v0.9.7","v0.9.6","v0.9.5","v0.9.4","v0.9.3","v0.9.2","v0.9.1","v0.9.0","v0.9.0-rc4","v0.9.0-rc3","v0.9.0-rc2","v0.9.0-rc1","v0.8.1","v0.8.0","v0.7.3","v0.7.2","v0.7.1","v0.7.0","v0.7.0-rc2","v0.7.0-rc1","v0.6.0","v0.6.1","v0.6.0-rc4","v0.6.0-rc3","v0.6.0-rc2","v0.6.0-rc1","0.5.0","0.5.0-rc1","v0.4.0","v0.3.0","v0.3.0-rc6","v0.3.0-rc5","v0.3.0-rc4","v0.3.0-rc1","v0.3.0-pre10","v0.3.0-pre9","v0.3.0-pre8","v0.3.0-pre7","v0.3.0-pre6","v0.3.0-pre5","v0.3.0-pre2"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45695.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}