CVE-2025-9821: Mautic

Low severity, CVSS 2.7. EPSS: 0.3% chance of exploitation in the next 30 days.

SummaryUsers with webhook permissions can conduct SSRF via webhooks. If they have permission to view the webhook logs, the (partial) request response is also disclosed DetailsWhen sending webhooks, the destination is not validated, causing SSRF. ImpactBypass 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.

Affected products

• Mautic Mautic: from 4.4.0; from 5.0.0-alpha; from 6.0.0-alpha

Published 2025-09-03. Last modified 2026-06-17.