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CVE-2026-24031

Published: Mar 27, 2026Updated: Jul 15, 2026 Sources: CVE List NVDCWE-89
7.7HIGH
NVD MITRE
EPSS Score
0.4%
Top 67.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:UC:HI:HA:L
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:LAvailability
Low
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Weaknesses

CWE-89

Affected Products

dovecot
oss-projectaka pigeonhole
dovecotOn-premWeb App
Communications / email-server-client
open-xchange
commercial·DEaka open-xchange gmbh, ox
dovecot
Communications
Open-Xchange GmbH
commercial·DEaka open-xchange
OX Dovecot Pro
Communications

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json
documentation.open-xchange.com
https://access.redhat.com/security/cve/CVE-2026-24031
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2452181
bugzilla.redhat.com
and 1 more references View all →

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