Zammad GmbH Zammad Session Fixation Vulnerability
CVE-2026-102489 Exploited
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.
Being exploited in the wild
Catalogued 2 October 2026 · US federal remediation deadline 5 October 2026
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…
Exploit code is also public: Public PoC
- Public PoChorizon3ai/CVE-2026-1024896 stars
- Public PoC1xPwn/CVE-2026-1024896 stars
- Public PoCHunt-Benito/the-cookie-in-the-error-message-cve-2026-102489-zammad-session-hijack-to-rce
Assessment
- CVSS
- Not yet scored
- Severity
- Unscored
- Known exploited
- Yes — listed in the CISA KEV catalog
- Exploit availability
- CISA KEV, Public PoC
- Published
- 2 October 2026
- Last updated
- 2 October 2026
- Affected
- Zammad GmbH · Zammad
- Weakness
- CWE-384
At the source
References
Query this programmatically
Agents can read this through the MCP endpoint, or over HTTP:
curl https://www.cve.zerocrew.in/api/cve/CVE-2026-102489