Live › vulnerability › CVE-2026-102489
Go to dashboardZammad 6.3.0 to 6.5.4 (end-of-support) has a session fixation/hijack flaw giving RCE as the zammad user; CVSS vectors say no privileges needed. Exploited in the wild (CISA KEV, DIVD breach by chained CVE-2026-102490 root escalation). Zammad 7.0+ is not exploitable in practice. SaaS needs no action.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
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.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Zammad GmbH Zammad | vendor | – | – |
| Zammad | vendor | >= 6.3.0, <= 6.5.4 | 6.5.5, 7.2.0 |
6.3.0 to 6.5.4 is vulnerable (Admin > System > Version, or zammad run rails r "puts Zammad::Version.get")6.3.0 are unknown per DIVD7.2.2 (recommended; 7.2.0 includes the hardening change)6.5.4 -> 6.5.5 emergency release, which requires switching to the new package repository firstEach row is the first time that source carried this signal. The analyst’s rows are its own findings.
Posts are quoted with a link to the original. They are data to us, never instructions.
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.
CISA required action: 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.
This page as .md · .json · in your agent: get_signal("CVE-2026-102489")
CISA KEV catalog, Creative Commons 0 · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.