CVE-2026-33605

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode default for community releases, only the attacker's own connection is terminated. If running in high-performance mode default for Pro...

ALPINE-CVE-2026-33605

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode default for community releases, only the attacker's own connection is terminated. If running in high-performance mode default for Pro...

CVE-2026-42395

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

CVE-2026-42395

CVE-2026-42395 affects Dovecot (OX Dovecot by Open-Xchange, per the advisory reference). A host listed as a trusted proxy can send forwarding information containing a NUL byte , which crashes the login process on the next login attempt, causing degradation or denial of service for logins. Deploym...

CVE-2026-42395

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

CVE-2026-42395

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

EUVD-2026-67677

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

CVE-2026-42395

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

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

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...

CVE-2026-33605

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode default for community releases, only the attacker's own connection is terminated. If running in high-performance mode default for Pro...

EUVD-2026-67660

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode default for community releases, only the attacker's own connection is terminated. If running in high-performance mode default for Pro...

CVE-2026-33605

An unauthenticated attacker can crash the ManageSieve login process by sending a small malformed command before authenticating. If running in high-security mode default for community releases, only the attacker's own connection is terminated. If running in high-performance mode default for Pro...

EUVD-2026-67576

SOY Calendar contains a cross-site scripting vulnerability. An arbitrary script may be executed on the web browser of the user who is logging in to the product...

PT-2026-83067

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.5-1.1 Description An unauthenticated attacker can send an IMAP ID command containing an excessive number of parameters before authentication. This action causes disproportionate growth in memory and CPU usage,...

CVE-2026-42395

A host listed as a trusted proxy can send forwarding information containing a NUL byte, which crashes the login process on the following login attempt. The login process is terminated, which can cause degradation or denial of service for logins. Deployments that do not configure trusted proxies a...

PT-2026-83053

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.5-1.1 Description An unauthenticated attacker can cause a denial of service for Sieve script management by sending a small malformed command before authentication, which crashes the ManageSieve login process. The...

PT-2026-83070

Name of the Vulnerable Software and Affected Versions dovecot versions prior to 2.4.5-1.1 Description A host configured as a trusted proxy can send forwarding information containing a NUL byte. This causes the login process to crash during the subsequent login attempt, leading to process...

PT-2026-67887

Name of the Vulnerable Software and Affected Versions Ghost versions 2.2.0 through 6.54.0 Description Ghost Admin fails to invalidate existing sessions during the login process, which could enable session fixation attacks. Session fixation is a method where an attacker provides a valid session...