CVE-2026-102489

Zammad GmbH Zammad

Published 30 Sept 2026 · updated 3 Oct 2026 · Analyzed

9.4 Critical · CVSS 4.0, divd.nl

Exploited in the wild

CISA added this to its Known Exploited Vulnerabilities catalog on 2 Oct 2026, with a remediation deadline of 5 Oct 2026 for US federal agencies.

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.

Description

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.

References