CVE-2026-27860

CVSS Score & Metrics

Base Score

3.7 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

March 27, 2026

Last Modified

March 30, 2026

CWE ID

CWE-90

Source

NVD

Vendor

Open-Xchange GmbH

Product

OX Dovecot Pro

External References

https://documentation.open-xchange.com/dovecot/security/advisories/csaf/2026/oxdc-adv-2026-0001.json

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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