CVE-2026-24031 Affecting dovecot package, versions <1:2.4.3+dfsg1-1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.4% (32nd percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-DOVECOT-15805202
  • published29 Mar 2026
  • disclosed27 Mar 2026

Introduced: 27 Mar 2026

CVE-2026-24031  (opens in a new tab)

How to fix?

Upgrade Debian:unstable dovecot to version 1:2.4.3+dfsg1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dovecot package and not the dovecot package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1