Disclosure summary
Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user. The vulnerability is also present in version 7.0.0 to version 7.1.3, but not exploitable due to environment conditions.
CISA remediation guidance
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.
Source-reported weakness categories
CWE-384
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2026-102489
Open original source · Updated Oct 03, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| zammad | zammad | * {"versionStartIncluding":"7.0.0","versionEndIncluding":"7.1.3"} |
Original records & references
- NIST NVD record
- CVE Program record
- CISA KEV catalog entry
- csirt.divd.nl — Third Party Advisory
- csirt.divd.nl — Third Party Advisory
- www.cisa.gov — US Government Resource
PUBLISHED 2026-09-30T13:16:40-04:00
MODIFIED 2026-10-03T00:17:56-04:00
INGESTED 2026-10-06T11:44:59-04:00