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Fedora 44 erlang-cowlib Critical CRLF Issues Lead to DoS Vulnerability

Cowlib 2.16.1. -------------------------------------------------------------------------------- Fedora Update Notification FEDORA-2026-84270bbc49 2026-05-21 00:54:04.884688+00:00 -------------------------------------------------------------------------------- Name : erlang-cowlib Product : Fedora 44 Version : 2.16.1 Release : 1.fc44 URL : https://github.com/ninenines/cowlib Summary : Support library for manipulating Web protocols Description : Support library for manipulating Web protocols. -------------------------------------------------------------------------------- Update Information: Cowlib 2.16.1 -------------------------------------------------------------------------------- ChangeLog: * Tue May 12 2026 Peter Lemenkov - 2.16.1-1 - Cowlib ver. 2.16.1 -------------------------------------------------------------------------------- References: [ 1 ] Bug #2476458 - erlang-cowlib-2.16.1 is available https://bugzilla.redhat.com/show_bug.cgi?id=2476458 [ 2 ] Bug #2479579 - CVE-2026-43968 erlang-cowlib: cowlib: CRLF Injection leads to client-side logic manipulation [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2479579 [ 3 ] Bug #2479811 - CVE-2026-43970 erlang-cowlib: cowlib: Remote denial of service via data amplification in SPDY frame processing [fedora-all] https://bugzilla.redhat.com/show_bug.cgi?id=2479811 -------------------------------------------------------------------------------- This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2026-84270bbc49' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label All packages are signed with the Fedora Project GPG key. More details on the GPG keys used by the Fedora Project can be foundat https://fedoraproject.org/keys -------------------------------------------------------------------------------- -- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/This email address is being protected from spambots. You need JavaScript enabled to view it. Do not reply to spam, report it: https://forge.fedoraproject.org/infra/tickets/issues/new . Critical advisory for erlang-cowlib on Fedora ensuring secure protocol manipulation against threats.. cowlib Fedora denial of service security updates. . Severity: Important. LinuxSecurity.com Team

May 21, 2026 •Important Fedora