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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. Exim before 4.100.1 allows SMTP smuggling in which the received message does not match any sent message, and instead depends on crafted data sent after a rejection during DATA processing.
FEDORA-2026-3f88ddbd83 (exim-4.100.1-1.fc45) has been submitted as an update to Fedora 45. https://bodhi.fedoraproject.org/updates/FEDORA-2026-3f88ddbd83
FEDORA-2026-4f9e436ed5 (exim-4.100.1-1.fc44) has been submitted as an update to Fedora 44. https://bodhi.fedoraproject.org/updates/FEDORA-2026-4f9e436ed5
FEDORA-2026-d202b74c6a (exim-4.100.1-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-d202b74c6a
FEDORA-2026-3f88ddbd83 has been pushed to the Fedora 45 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-3f88ddbd83` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-3f88ddbd83 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-4f9e436ed5 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-2026-4f9e436ed5` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-4f9e436ed5 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-d202b74c6a 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-d202b74c6a` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-d202b74c6a See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates.
FEDORA-2026-d202b74c6a (exim-4.100.1-1.fc43) has been pushed to the Fedora 43 stable repository. If problem still persists, please make note of it in this bug report.
FEDORA-2026-4f9e436ed5 (exim-4.100.1-1.fc44) has been pushed to the Fedora 44 stable repository. If problem still persists, please make note of it in this bug report.