SSRF in Zammad

CVE-2026-34719

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the webhook model was missing a proper validation for loop back addresses, or link-local addresses — only the URL scheme (HTTP/HTTPS) as well as…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.000 (1.3th percentile) — read the EPSS interpretation.

Affected products

  • Zammad — versions < 6.5.4, >= 7.0.0-alpha, < 7.0.1

Weakness classification (CWE)

References