What is CVE-2026-24031?

CVE-2026-24031 is a high-severity vulnerability in Dovecot, classified under SQL Injection. CVSS score: 7.7/10. Published 2026-03-27.

How severe is CVE-2026-24031?

High severity. CVSS v3 base score is 7.7 out of 10.

SQL Injection in Dovecot

CVE-2026-24031

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…

Vulnerability class: SQL Injection

EPSS: 0.000 (10.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L.

Affected products

Dovecot
Open-xchange Dovecot
Open-xchange Gmbh Ox Dovecot Pro — versions 0

Weakness classification (CWE)

CWE-89 — SQL Injection

References

security@open-xchange.com (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-24031?: CVE-2026-24031 is a high-severity vulnerability in Dovecot, classified under SQL Injection. CVSS score: 7.7/10. Published 2026-03-27.
How severe is CVE-2026-24031?: High severity. CVSS v3 base score is 7.7 out of 10.