Server-side Request Forgery (SSRF) Affecting alextselegidis/easyappointments package, versions <1.6.0
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.
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Test your applications- Snyk IDSNYK-PHP-ALEXTSELEGIDISEASYAPPOINTMENTS-17972364
- published14 Jul 2026
- disclosed14 Jul 2026
- creditUnknown
Introduced: 14 Jul 2026
NewCVE-2026-52840 (opens in a new tab)How to fix?
Upgrade alextselegidis/easyappointments to version 1.6.0 or higher.
Overview
alextselegidis/easyappointments is a powerful Open Source Appointment Scheduler that can be installed on your server.
Affected versions of this package are vulnerable to Server-side Request Forgery (SSRF) in the connect_to_server function. An attacker can access internal network resources by supplying a crafted caldav_url parameter, allowing requests to loopback, RFC1918, and link-local hosts. The response may include the upstream status code and a portion of the response body in the JSON message field, potentially exposing sensitive information.