3.7
Low
CVE-2026-27860 If auth_username_chars is empty, it is possible to inject arbitrary LDAP filter to Dovecot's LDAP authentication
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| OX Dovecot Pro 3.1 | earliest → 3.1.0 | No fix stated |
| OX Dovecot Pro 2.4 | earliest → 2.4.0 | No fix stated |
References
- documentation.open-xchange.com documentation.open-xchange.com
Timeline
- Published
- Last modified
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