Zammad GmbH Zammad

What it is

Zammad GmbH Zammad contains a session fixation vulnerability that can lead to remote code execution as the zammad user. This vulnerability can be chained with CVE-2026-102490.

What to do

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Vendor notices and references

• zammad.com/en/product/releases/
• community.zammad.org/t/take-care-local-privilege-escalation-cve-2026-102490-is-reported-as
• nvd.nist.gov/vuln/detail/CVE-2026-102489

Description and required action as published by CISA. Full record at NVD.