CVEvulnerability

CVE-2026-52840

2.7 LOW Published 2026-07-14 Modified 2026-10-24 Official page ↗
Status
Deferred
Published
2026-07-14
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
2.7 LOW — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-918

Description

Easy!Appointments is a self hosted appointment scheduler. In versions prior to 1.6.0, `Caldav::connect_to_server` at `application/controllers/Caldav.php:60` hands the request's `caldav_url` to a Guzzle `REPORT` call without scheme or host validation. A logged-in backend user (admin, provider, or secretary) reaches loopback, RFC1918, and link-local hosts on the deployment's network. The Guzzle exception path returns the upstream status code plus ~120 bytes of response body in the JSON `message` field (`Caldav.php:74-78`), so the SSRF is semi-blind. Version 1.6.0 contains a patch.

Related

Weakness · CWE (1)

  • CWE-918 Server-Side Request Forgery weakness

References