CVE-2026-45695

critical · 9.8

A public exploit / detection template exists

Weaponised detection is publicly available, which meaningfully raises real-world risk regardless of CVSS. nuclei-templates →

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.

9.8

CVSS

1.6%

EPSS (exploit prob.)

75th

EPSS percentile

2026-07-16

Published

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-78CWE-306

References

https://github.com/kopia/kopia/commit/c26c6a1b9734c5089217986ffa5cd19f8a6b8900
https://github.com/kopia/kopia/pull/5354
https://github.com/kopia/kopia/releases/tag/v0.23.0
https://github.com/kopia/kopia/security/advisories/GHSA-2q4c-3mrw-63c3

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-45695