CVEvulnerability

CVE-2026-27860

5.3 MEDIUM Published 2026-03-27 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-03-27
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
3.7 LOW — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-90

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 configurations

• dovecot dovecot (< 2.4.3) • open-xchange dovecot (< 3.1.4)

Related

Weakness · CWE (1)

  • CWE-90 Improper Neutralization of Special Elements used in an LDAP Query weakness

References