OX Dovecot Pro: Mehrere Schwachstellen
WID-SEC-2026-1510 · first 13.05.2026 · updated 22.09.2026 · CVSS 7,4
What it is about
Dovecot ist ein Open Source IMAP und POP3 E-Mail Server. Ein Angreifer kann mehrere Schwachstellen in OX Dovecot Pro ausnutzen, um SQL-Injection-Angriffe durchzuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- SQL-Injection-Angriffe durchzuführen
- Sicherheitsmaßnahmen zu umgehen
- Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand zu verursachen
Am I affected?
Affected according to the BSI:
- Debian Linux
- Red Hat Enterprise Linux
- Fedora Linux
- Ubuntu Linux
- SUSE Linux
- SUSE openSUSE
- Open Source Dovecot OX Pro core <3.1.5
- Open Source Dovecot OX Pro core <2.4.4
- RESF Rocky Linux
- Oracle Linux
- cPanel cPanel/WHM <137.9999.96
- cPanel cPanel/WHM <110.0.138
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Dovecot OX Pro core 3.1.5
- Open Source Dovecot OX Pro core 2.4.4
- cPanel cPanel/WHM 137.9999.96
- cPanel cPanel/WHM 110.0.138
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Dovecot Security Advisory OXDC-2026-0002 vom 2026-05-12 dovecot.org
- Dovecot and Pigeonhole v2.4.4 Released vom 2026-05-12 dovecot.org
- GitHub Security Advisory GHSA-h6rp-9mjf-6x88 vom 2026-05-12 github.com
- openSUSE Security Update OPENSUSE-SU-2026:10766-1 vom 2026-05-14 lists.opensuse.org
- Fedora Security Advisory FEDORA-2026-96EEB03B88 vom 2026-05-18 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-693373747F vom 2026-05-18 bodhi.fedoraproject.org
- Debian Security Advisory DSA-6313 vom 2026-05-31 lists.debian.org
- Ubuntu Security Notice USN-8365-1 vom 2026-06-02 ubuntu.com
- Debian Security Advisory DLA-4617 vom 2026-06-05 lists.debian.org
- SUSE Security Update SUSE-SU-2026:22185-1 vom 2026-06-23 lists.suse.com
- SUSE Security Update SUSE-SU-2026:2645-1 vom 2026-06-26 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:21109-1 vom 2026-06-30 lists.opensuse.org
- Red Hat Security Advisory RHSA-2026:41905 vom 2026-07-20 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-41988 vom 2026-07-21 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:42091 vom 2026-07-20 access.redhat.com
- Red Hat Security Advisory RHSA-2026:41988 vom 2026-07-20 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-41905 vom 2026-07-21 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:41988 vom 2026-07-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:41905 vom 2026-07-22 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:44373 vom 2026-07-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:44355 vom 2026-07-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:44357 vom 2026-07-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:46381 vom 2026-07-27 access.redhat.com
- Red Hat Security Advisory RHSA-2026:46379 vom 2026-07-27 access.redhat.com
- Red Hat Security Advisory RHSA-2026:46380 vom 2026-07-27 access.redhat.com
and 9 more sources in the original advisory
CVE: CVE-2026-27851, CVE-2026-40016, CVE-2026-33603, CVE-2026-40020, CVE-2026-42006
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.