Vulnerability · Published Sep 3, 2025 · Assigned by Mautic
CVE-2025-9821SSRF via webhook function
Low 2.7
In plain English
A low-severity server-side request forgery in Mautic from Mautic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | mautic/core | 4.4.17 | GHSA-hj6f-7hp7-xg69 |
| Packagist | mautic/core | 5.2.8 | GHSA-hj6f-7hp7-xg69 |
| Packagist | mautic/core | 6.0.5 | GHSA-hj6f-7hp7-xg69 |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N