Vulnerability

[ Description ]Official description

An Open Redirect vulnerability exists in the public form submission endpoint (/form/submit) of Mautic. After a form is submitted, the application redirects the visitor to a return address supplied with the submission without verifying that it points to the Mautic instance or another trusted host. An unauthenticated attacker can exploit this to send visitors from a legitimate Mautic domain to an arbitrary external website, for example to phishing pages that imitate the original landing page or to sites that deliver malware. Any Mautic instance with a published form is affected. Exploitation requires the victim to submit a form prepared by the attacker.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund25 Oct 2026WID-SEC-2026-4163

  Mautic: Multiple vulnerabilities Translated from German

  CVE-2026-115194CVE-2026-115189CVE-2026-115193+6 more CVEs

[ References ]References

• github.com/mautic/mautic/security/advisories/GHSA-5mm3-3g7p-9868