Zammad: Mehrere Schwachstellen
WID-SEC-2026-1981 · first 17.06.2026 · updated 28.09.2026 · CVSS 8,8
What it is about
Zammad ist ein Helpdesk- und Ticketsystem. Ein Angreifer kann mehrere Schwachstellen in Zammad ausnutzen, um Administratorrechte zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen.
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
- Administratorrechte zu erlangen
- Sicherheitsmaßnahmen zu umgehen
- Daten zu manipulieren
- vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand auszulösen
Am I affected?
Affected according to the BSI:
- Zammad Zammad <7.1
- Zammad Zammad <7.0.2
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Zammad Zammad 7.1
- Zammad Zammad 7.0.2
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)
- Zammad Product Releases vom 2026-06-16 zammad.com
- GitHub Security Advisory GHSA-374g-4f73-g7m7 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-45cx-9mrq-mmcj vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-4m54-p3mr-22g2 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-56jc-34c8-2xq4 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-6rmm-28j9-q99q vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-7fwx-3xr4-qm6w vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-96hh-fmj3-h4hp vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-jvcg-5539-vvc3 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-p3mg-2jxr-hww2 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-p9xp-gx8r-4397 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-pf47-8964-pp23 vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-pv3q-74g5-w7fv vom 2026-06-16 github.com
- GitHub Security Advisory GHSA-q3cr-3wq3-29hx vom 2026-06-16 github.com
CVE: CVE-2026-13229, CVE-2026-56723, CVE-2026-56724, CVE-2026-56725, CVE-2026-56726, CVE-2026-56727, CVE-2026-56728, CVE-2026-56729, CVE-2026-56730, CVE-2026-56731, CVE-2026-56732, CVE-2026-56733, CVE-2026-56734, CVE-2026-56735
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.