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Dovecot dovecotLast updated 2 June 2026

Risk 23
Severity
4.3
First published (updated )
CVE-2026-40020

Dovecot dovecotLast updated 2 June 2026

Risk 46
Severity
7.5
First published (updated )
CVE-2026-42006

Dovecot Pigeonhole (Sieve)Last updated 2 June 2026

Risk 40
Severity
6.5
First published (updated )
CVE-2026-40016

Dovecot dovecotLast updated 2 June 2026

Risk 54
Severity
6.8
First published (updated )
CVE-2026-33603

Dovecot dovecotSQL Injection

Risk 70
Severity
9.1
First published (updated )
CVE-2026-27851
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Dovecot Dovecot ManageSieveAttacker can send a specifically crafted message before authentication that causes managesieve to al…

Risk 33
Severity
7
First published (updated )
REDHAT-BUG-2452175

Dovecot doveadmDoveadm credentials are verified using direct comparison which is susceptible to timing oracle attac…

Risk 33
Severity
7
First published (updated )
REDHAT-BUG-2452171

Open-Xchange DovecotA mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much C…

Risk 28
Severity
5.3
First published (updated )
CVE-2026-27859

Dovecot Dovecot (LDAP authentication)If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP au…

Risk 28
Severity
5.3
First published (updated )
CVE-2026-27860

Open-Xchange DovecotAttacker can send a specifically crafted message before authentication that causes managesieve to al…

Risk 46
Severity
7.5
First published (updated )
CVE-2026-27858
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Open-Xchange DovecotSending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage…

Risk 46
Severity
7.5
First published (updated )
CVE-2026-27857

Open-Xchange DovecotDoveadm credentials are verified using direct comparison which is susceptible to timing oracle attac…

Risk 59
Severity
7.4
First published (updated )
CVE-2026-27856

Dovecot dovecotSQL Injection

Risk 57
Severity
8.2
First published (updated )
CVE-2026-24031

Dovecot dovecotDovecot OTP authentication is vulnerable to replay attack under specific conditions. If auth cache i…

Risk 53
Severity
6.8
First published (updated )
CVE-2026-27855

Dovecot dovecotPath Traversal

Risk 28
Severity
5.3
First published (updated )
CVE-2026-0394
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Dovecot Dovecot ManageSieveInput Validation

Risk 46
Severity
7.5
First published (updated )
CVE-2025-59032

Open-Xchange DovecotInfoleak

Risk 23
Severity
4.3
First published (updated )
CVE-2025-59031

Dovecot dovecotInput Validation

Risk 45
Severity
7.5
First published (updated )
CVE-2025-59028

Dovecot IMAP ServerDovecot IMAP Server: Using auth caching causes the first lookup to be cached for all lookups

Risk 60
Severity
7.4
First published (updated )
CVE-2025-30189

CVE-2025-30189: Dovecot IMAP Server: Using auth caching causes the first lookup to be cached for all lookups

First published (updated )
https://seclists.org/oss-sec/2025/q4/97
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Dovecot dovecotDovecot accepts dot LF DOT LF symbol as end of DATA command. RFC requires that it should always be C…

Risk 27
Severity
5.3
First published (updated )
CVE-2024-25584

Dovecot dovecotVulnerability Details: Very large headers can cause resource exhaustion when parsing message. The me…

Risk 18
Severity
4
First published (updated )
REDHAT-BUG-2305910

Dovecot dovecotVulnerability Details: Having a large number of address headers (From, To, Cc, Bcc, etc.) becomes ex…

Risk 18
Severity
4
First published (updated )
REDHAT-BUG-2305909

Dovecot CVE-2024-23185: Very large headers can cause source exhaustion when parsing message

First published (updated )
https://seclists.org/oss-sec/2024/q3/203

Dovecot CVE-2024-23184: Having a large number of addss headers (From, To, Cc, Bcc, etc.) becomes excessively CPU intensive

First published (updated )
https://seclists.org/oss-sec/2024/q3/202
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Dovecot dovecotAn issue was discovered in the auth component in Dovecot 2.2 and 2.3 before 2.3.20. When two passdb …

Risk 79
Severity
8.8
First published (updated )
CVE-2022-30550

Fedoraproject FedoraThe Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated …

Risk 22
Severity
4.3
First published (updated )
CVE-2020-28200

Fedoraproject FedoraCommand Injection

Risk 35
Severity
5.8
First published (updated )
CVE-2021-33515

Fedoraproject FedoraPath Traversal

Risk 53
Severity
7.5
First published (updated )
CVE-2021-29157

debian/dovecotAn issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can …

Risk 52
Severity
6.8
First published (updated )
CVE-2020-24386
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