Fedora 43 Dovecot Suffering from Moderate DoS Info Disclosure Issues

LinuxSecurity.com 02.06.2026 12:15 CVE-2026-27851: lib-var-expand: Safe filter marks all following pipelines safe. CVE-2026-33603: auth: CRAM-SHA-*-PLUS channel binding could be faked. MITM attacker with a certificate trusted by the client could have bypassed the requirement for channel binding. CVE-2026-40020: IMAP folders can be shared-spammed to everyone.

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