Mautic vulnerable to SSRF via webhook function
Date: 2025-09
Affected: composer/mautic/core, composer/mautic/core, composer/mautic/core
Attack vector: ssrf
Category: vulnerability-disclosure
Severity: Low
CVE: CVE-2025-9821
CWE: CWE-918
CVSS: 2.7 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N)

### Summary Users with webhook permissions can conduct SSRF via webhooks. If they have permission to view the webhook logs, the (partial) request response is also disclosed ### Details When sending webhooks, the destination is not validated, causing SSRF. ### Impact Bypass of firewalls to interact with internal services. See https://owasp.org/Top10/A10_2021-Server-Side_Request_Forgery_%28SSRF%29/ for more potential impact. ### Resources https://cheatsheetseries.owasp.org/cheatsheets/Server_Side_Request_Forgery_Prevention_Cheat_Sheet.html for more information on SSRF and its fix


Mitigations:

Architectural layers (MAESTRO):