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Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. When a user invokes curl using a schemeless URL combined with `--proto-default` sftp (or scp), a disconnect occurs between the tool layer and libcurl. The tool layer incorrectly infers the URL scheme, which erroneously bypasses the initialization of critical SSH security options like CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 and CURLOPT_SSH_KNOWNHOSTS. Conversely, the libcurl runtime successfully honors CURLOPT_DEFAULT_PROTOCOL and establishes the connection via SFTP/SCP as specified. Because the tool layer skipped the security configuration, these SSH host verification options are silently omitted, causing curl to connect to an unverified SSH remote host without throwing an error.
This bug appears to have been reported against 'rawhide' during the Fedora Linux 45 development cycle. Changing version to 45.
FEDORA-2026-2f88b83676 (curl-8.18.0-9.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-2f88b83676
FEDORA-2026-2f88b83676 has been pushed to the Fedora 44 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-2f88b83676` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-2f88b83676 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-2f88b83676 (curl-8.18.0-9.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-f903f9ff11 (curl-8.15.0-9.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-f903f9ff11
FEDORA-2026-f903f9ff11 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-f903f9ff11` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-f903f9ff11 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-f903f9ff11 (curl-8.15.0-9.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.