Server-side Request Forgery (SSRF) Affecting mautic/core package, versions <5.2.11>=6.0.0-alpha, <6.0.9>=7.0.0-alpha, <7.1.2
Threat Intelligence
This vulnerability is trending on Twitter; this may indicate a growing threat.
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.
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Test your applications- Snyk IDSNYK-PHP-MAUTICCORE-17132603
- published2 Jun 2026
- disclosed29 May 2026
- creditMateus, Nguyen Huy Vu Dung
Introduced: 29 May 2026
CVE-2026-9557 (opens in a new tab)How to fix?
Upgrade mautic/core to version 5.2.11, 6.0.9, 7.1.2 or higher.
Overview
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) via insufficient validation of user-supplied URLs in the Focus component. An attacker can cause the server to send HTTP requests to internal or external destinations by supplying crafted URLs. This can enable internal network reconnaissance or access to otherwise restricted resources.
Workaround
This vulnerability can be mitigated by disabling or limiting external network access from the web server to internal-only subnets and local hosts.