CVE-2026-45695
Unauthenticated RCE in Kopia HTTP server (<0.23.0) via SFTP ProxyCommand injection
Is CVE-2026-45695 being exploited?
Not confirmed. CVE-2026-45695 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 1.6% probability of exploitation in the next 30 days.
How severe is CVE-2026-45695?
CVE-2026-45695 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-45695?
Yes. A fix has been recorded for CVE-2026-45695. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-45695 affect?
CVE-2026-45695 affects Kopia versions < 0.23.0, Kopia HTTP server started with --without-password, SFTP storage backend using externalSSH and sshArguments (-oProxyCommand). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-45695?
Upgrade to Kopia 0.23.0 immediately or disable --without-password and restrict HTTP access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote code execution by sending crafted /api/v1/repo/exists SFTP config that triggers ssh ProxyCommand execution when server runs with --without-password.
Immediate action required
- affected< 0.23.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.