Zammad GmbH Zammad Session Fixation Vulnerability

High CISA KEV

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.

Remediation

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).

Affected PHP branches

See the source advisory.

Check your site

Source: CISA Known Exploited Vulnerabilities Catalog · retrieved 2026-10-22T10:19:14-04:00 · https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

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