FasterXML Jackson: Mehrere Schwachstellen ermöglichen Denial of Service
WID-SEC-2026-3532 · first 23.09.2026 · updated 29.10.2026 · CVSS 7,5
What it is about
Jackson ist eine quelloffene Bibliothek zur JSON-Verarbeitung in Java. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in FasterXML Jackson ausnutzen, um einen Denial of Service Angriff durchzuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Fedora Linux
- IBM SPSS Modeler
- RESF Rocky Linux
- SUSE Linux
- SUSE openSUSE
- Oracle Linux
- IBM SPSS Analytic Server
- FasterXML Jackson <2.18.11
- FasterXML Jackson <2.21.7
- FasterXML Jackson <2.22.3
- FasterXML Jackson <3.2.3
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- FasterXML Jackson 2.18.11
- FasterXML Jackson 2.21.7
- FasterXML Jackson 2.22.3
- FasterXML Jackson 3.2.3
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)
- GitHub Advisory Database vom 2026-09-22 github.com
- GitHub Advisory Database vom 2026-09-22 github.com
- GitHub Advisory Database vom 2026-09-22 github.com
- SUSE Security Update SUSE-SU-2026:4394-1 vom 2026-09-29 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:11876-1 vom 2026-09-29 lists.opensuse.org
- openSUSE Security Update OPENSUSE-SU-2026:11877-1 vom 2026-09-29 lists.opensuse.org
- IBM Security Bulletin 7292451 vom 2026-10-14 www.ibm.com
- Red Hat Security Advisory RHSA-2026:83082 vom 2026-10-15 access.redhat.com
- IBM Security Bulletin 7292707 vom 2026-10-15 www.ibm.com
- Red Hat Security Advisory RHSA-2026:83670 vom 2026-10-16 access.redhat.com
- Red Hat Security Advisory RHSA-2026:83520 vom 2026-10-15 access.redhat.com
- IBM Security Bulletin 7292703 vom 2026-10-15 www.ibm.com
- Red Hat Security Advisory RHSA-2026:85231 vom 2026-10-19 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-85231 vom 2026-10-20 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:86706 vom 2026-10-21 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:85231 vom 2026-10-20 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:86706 vom 2026-10-22 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:88150 vom 2026-10-22 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-86706 vom 2026-10-21 linux.oracle.com
- IBM Security Bulletin 7293430 vom 2026-10-22 www.ibm.com
- Red Hat Security Advisory RHSA-2026:89734 vom 2026-10-26 access.redhat.com
- Red Hat Security Advisory RHSA-2026:89924 vom 2026-10-26 access.redhat.com
- Fedora Security Advisory FEDORA-2026-F20C4144A2 vom 2026-10-28 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-36BC6490A3 vom 2026-10-27 bodhi.fedoraproject.org
- Red Hat Security Advisory RHSA-2026:90909 vom 2026-10-28 access.redhat.com
and 1 more sources in the original advisory
CVE: CVE-2026-89425, CVE-2026-91776, CVE-2026-91777
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.