CVE-2025-41256

Cyberduck and Mountain Duck improper handle TLS certificate pinning for untrusted certificates (e.g., self-signed), since the certificate fingerprint is stored as SHA-1, although SHA-1 is considered weak.

This issue affects Cyberduck: through 9.1.6; Mountain Duck: through 4.17.5.

More information : https://github.com/iterate-ch/cyberduck/security/advisories/GHSA-688c-vjrc-84rv