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, install latest fixed version. No publicly available exploits are known.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.2 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json	Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-24031
https://bugzilla.redhat.com/show_bug.cgi?id=2452181
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24031.json

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:dovecot:dovecot::::::::
	cpe:2.3:a:open-xchange:dovecot:::::pro:::*

History

30 Jun 2026, 03:17

Type	Values Removed	Values Added
References		() https://access.redhat.com/security/cve/CVE-2026-24031 - () https://bugzilla.redhat.com/show_bug.cgi?id=2452181 - () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24031.json -

29 Apr 2026, 19:21

Type	Values Removed	Values Added
First Time		Open-xchange Open-xchange dovecot Dovecot Dovecot dovecot
CPE		cpe:2.3:a:dovecot:dovecot:::::::: cpe:2.3:a:open-xchange:dovecot:::::pro:::*
References	~~() https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json -~~	() https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json - Vendor Advisory

27 Mar 2026, 09:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-27 09:16

Updated : 2026-07-15 02:18

NVD link : CVE-2026-24031

Mitre link : CVE-2026-24031

CVE.ORG link : CVE-2026-24031

JSON object : View

Products Affected

dovecot

dovecot

open-xchange

dovecot

CWE

CWE-89

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

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