Jenkins: Mehrere Schwachstellen
WID-SEC-2026-0779 · first 19.03.2026 · updated 24.04.2026 · CVSS 8,8
What it is about
Jenkins ist ein erweiterbarer, webbasierter Integration Server zur kontinuierlichen Unterstützung bei Softwareentwicklungen aller Art. Ein Angreifer kann mehrere Schwachstellen in Jenkins ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen oder vertrauliche Informationen offenzulegen.
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
- beliebigen Programmcode auszuführen
- Sicherheitsmaßnahmen zu umgehen oder vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Jenkins Jenkins weekly <2.555
- Jenkins Jenkins LTS <2.541.3
- Jenkins Jenkins LoadNinja Plugin <2.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Jenkins Jenkins weekly 2.555
- Jenkins Jenkins LTS 2.541.3
- Jenkins Jenkins LoadNinja Plugin 2.2
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)
- Jenkins Security Advisory 2026-03-18 vom 2026-03-18 www.jenkins.io
- Red Hat Security Advisory RHSA-2026:10214 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10213 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10215 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10201 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10211 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10199 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10204 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10209 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10205 vom 2026-04-23 access.redhat.com
- Red Hat Security Advisory RHSA-2026:10206 vom 2026-04-23 access.redhat.com
CVE: CVE-2026-33001, CVE-2026-33002, CVE-2026-33003, CVE-2026-33004
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.