CVE-2026-27860
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication. This leads to potentially bypassing restrictions and allows probing of LDAP structure. Do not clear out auth_username_chars, or install fixed version. No publicly available exploits are known.
| CWE | CWE-90 |
| Vendor | open-xchange gmbh |
| Product | ox dovecot pro |
| Published | Mar 27, 2026 |
| Last Updated | Mar 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
Open-Xchange GmbH / OX Dovecot Pro
0 ≤ 3.1.0 0 ≤ 2.4.0