Server-side Request Forgery (SSRF) Affecting mautic/core-lib package, versions <5.2.8>=6.0.0-alpha, <6.0.5
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Server-side Request Forgery (SSRF) vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-PHP-MAUTICCORELIB-12484273
- published3 Sept 2025
- disclosed3 Sept 2025
- creditasesidaa
Introduced: 3 Sep 2025
NewCVE-2025-9821 (opens in a new tab)How to fix?
Upgrade mautic/core-lib to version 5.2.8, 6.0.5 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via the webhook functionality. An attacker can access internal network resources and potentially retrieve partial response data by specifying arbitrary destinations when sending webhooks.
Note:
This is only exploitable if the attacker has webhook permissions or permission to view webhook logs.