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Vulnerability DatabaseCVE-2026-24031

CVE-2026-24031: 
Dovecot vulnerability analysis and mitigation

Dovecot SQL based authentication can be bypassed when auth_username_chars is cleared by admin. This vulnerability allows bypassing authentication for any user and user enumeration. Do not clear auth_username_chars. If this is not possible, install latest fixed version. No publicly available exploits are known.

Source: NVD

Related Dovecot vulnerabilities:

CVE ID

Severity

Score

Technologies

Component name

CISA KEV exploit

Has fix

Published date

CVE-2026-27858HIGH7.5
  • DovecotDovecot
  • dovecot-pgsql-debuginfo
NoYesMar 27, 2026
CVE-2026-27856HIGH7.4
  • DovecotDovecot
  • dovecot-debuginfo
NoYesMar 27, 2026
CVE-2026-27859MEDIUM5.3
  • DovecotDovecot
  • dovecot-pgsql
NoYesMar 27, 2026
CVE-2026-27857MEDIUM4.3
  • DovecotDovecot
  • dovecot-debugsource
NoYesMar 27, 2026
CVE-2026-27860LOW3.7
  • DovecotDovecot
  • dovecot-devel
NoYesMar 27, 2026

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