CVE-2026-42391

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

CVE-2026-42391

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

EUVD-2026-67674

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

CVE-2026-42391

Open-Xchange Dovecot is vulnerable to a denial-of-service attack in its imap-login process. An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before authentication, causing disproportionate memory and CPU consumption . The resulting out-of-memory termi...

CVE-2026-42391

An unauthenticated attacker can send an IMAP ID command with a very large number of parameters before logging in, which causes memory and CPU usage to grow disproportionately. The login process can be terminated by the out-of-memory handling, which also terminates all other connections handled by...

ImapEngine affected by command injection via the ID command parameters

Versions of the package directorytree/imapengine before 1.22.3 are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' via the id function in ImapConnection.php due to improperly escaping user input before including it in IMAP ID commands...

PT-2026-8056

Name of the Vulnerable Software and Affected Versions directorytree/imapengine versions prior to 1.22.3 Description The software contains a flaw due to improper handling of user-supplied data before it is used in IMAP ID commands within the ImapConnection.php file. Specifically, the id function...

Fedora 26 : 1:dovecot (2017-e8b639c286)

quota: Add plugin quotamaxmailsize setting to limit the maximum individual mail size that can be saved. + imapc: Add imapcfeatures=delay-login. If set, connecting to the remote IMAP server isn't done until it's necessary. + imapc: Add imapcconnectionretrycount and imapcconnectionretryinterval...

Fedora 25 : 1:dovecot (2017-6ef28e38d6)

quota: Add plugin quotamaxmailsize setting to limit the maximum individual mail size that can be saved. + imapc: Add imapcfeatures=delay-login. If set, connecting to the remote IMAP server isn't done until it's necessary. + imapc: Add imapcconnectionretrycount and imapcconnectionretryinterval...