CVE records

Every CVE as the CVE Program publishes it, refreshed every ten minutes, with NVD's analysis, CISA's known-exploited status and a healthcare tag. Subscribers get the CVEs that match their own systems on My program, by email as they are published. Where the data comes from: sources.

Updated under an hour ago ()

What this means for you

This week: 3,224 CVEs published, 238 critical, and 5 newly confirmed exploited. Add your stack to see whether any of them hit you.

Published in the last 7 days
3,224
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Critical, last 7 days
238
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Healthcare-tagged, last 7 days
9
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Known exploited (CISA KEV)
1,762
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Showing CVEs that name the product dovecot:dovecot. Show all products

16 CVEs
Showing 1 to 10.
CVESeverityTitlePublished
CVE-2026-42006Medium 4.3An attacker can cause uncontrolled memory usage with excessive bracing over IMAP.
Assigned by OX
May 12, 2026
CVE-2026-40020Low 3.1Attacker can use the IMAP SETACL command to inject the anyone permission to user's dovecot-acl file even if imap_acl_allow_anyone=no.
Assigned by OX
May 12, 2026
CVE-2026-40016Medium 5.3Attacker can upload a malicious Sieve script over ManageSieve service (or locally) to bypass configured CPU time limits for Sieve up to 130 times of the configured limit.
Assigned by OX
May 12, 2026
CVE-2026-33603Medium 6.8Attacker can use a specially crafted base64 exchange between Dovecot and Client to fake SCRAM TLS channel binding.
Assigned by OX
May 12, 2026
CVE-2026-27851High 7.4When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped.
Assigned by OX
May 12, 2026
CVE-2026-27860Low 3.7If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication.
Assigned by OX
Mar 27, 2026
CVE-2026-27859Medium 5.3A mail message containing excessive amount of RFC 2231 MIME parameters causes LMTP to use too much CPU.
Assigned by OX
Mar 27, 2026
CVE-2026-27858High 7.5Attacker can send a specifically crafted message before authentication that causes managesieve to allocate large amount of memory.
Assigned by OX
Mar 27, 2026
CVE-2026-27857Medium 4.3Sending "NOOP (((...)))" command with 4000 parenthesis open+close results in ~1MB extra memory usage.
Assigned by OX
Mar 27, 2026
CVE-2026-27856High 7.4Doveadm credentials are verified using direct comparison which is susceptible to timing oracle attack.
Assigned by OX
Mar 27, 2026

CVSS is the assigning CNA's score where it gives one, otherwise NVD's. The healthcare tag is a documented heuristic (a list of clinical and health IT vendors, and clinical terms in the description), not a classification. The CVE record is authoritative.

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