CVE-2026-27860

CVE-2026-27860CVE-2026-27860

dovecot / dovecot

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.

Scoring

CVSS 3.7 ()
VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Last modified2026-10-26
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.