CVE-2026-24031HIGH 7.7EPSS p32.3%

CVE-2026-24031CVE-2026-24031

dovecot / dovecot

Description

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.

Scoring

CVSS 3.17.7 (HIGH)
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
EPSS0.40% probability of exploitation · percentile 32.3% · 2026-08-03T12:00:16Z
Published2026-03-27
Last modified2026-07-15

Underlying weaknesses· 1

CWE-89

References

  1. https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Special Elements used in an SQL Command ('SQL Injection')cwe-890%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.