CVE-2026-24031
CVSS Score
7.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-89 |
| Vendor | open-xchange gmbh |
| Product | ox dovecot pro |
| Published | Mar 27, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
Open-Xchange GmbH / OX Dovecot Pro
0 ≤ 3.1.0 0 ≤ 2.4.0
References
documentation.open-xchange.com: https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-24031 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2452181 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24031.json