CVE-2026-27851
Fixed in a distro release EPSS <1%CVSS 7.4
When safe filter is used with variable expansion, all following pipelines on the same string are incorrectly interpreted as safe too, enabling unsafe data to be unescaped. This can enable SQL / LDAP injection attacks when used in authentication. Avoid using safe filter until on fixed version. No publicly available exploits are known.
Products: Open-Xchange GmbH OX Dovecot Pro, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.23 | dovecot | 2.4.4-r0 |
| Alpine 3.24 | dovecot | 2.4.4-r0 |
| Debian 13 | dovecot | 1:2.4.1+dfsg1-6+deb13u6 |
| Debian 14 | dovecot | 1:2.4.4+dfsg1-1 |
| SUSE Linux Enterprise Server 16.0 | dovecot24 | 2.4.4-160000.1.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | dovecot24 | 2.4.4-160000.1.1 |
| Ubuntu 22.04 LTS | dovecot | 1:2.3.16+dfsg1-3ubuntu2.9 |
| Ubuntu 24.04 LTS | dovecot | 1:2.3.21+dfsg1-2ubuntu6.5 |
| Ubuntu 25.10 | dovecot | 1:2.4.1+dfsg1-5ubuntu4.2 |
| Ubuntu 26.04 LTS | dovecot | 1:2.4.2+dfsg1-3ubuntu2.1 |
| openSUSE Leap 16.0 | dovecot24 | 2.4.4-160000.1.1 |
| openSUSE Tumbleweed | dovecot24 | 2.4.4-1.1 |