Debian/dovecot: medium 5.3
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.
Action: Upgrade dovecot to 1:2.4.3+dfsg1-1 or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1:2.4.3+dfsg1-1 | - |
Fixed versions
| 1:2.4.3+dfsg1-1 |
Sources
- osv: DEBIAN-CVE-2026-27860#Debian:14/dovecot
- https://security-tracker.debian.org/tracker/CVE-2026-27860
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