GHSA-pm5p-7w5h-jm5q: alextselegidis/easyappointments (CVE-2026-52840)

Package	Ecosystem	Affected	Fixed in
alextselegidis/easyappointments	Packagist	<1.6.1	1.6.1

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Easy!Appointments versions up to and including 1.5.2 are affected by a server-side request forgery in the CalDAV connection test. A logged-in backend user, such as an admin, provider, or secretary, can make the server send requests to loopback, private network, and link-local hosts, and can read the upstream status code and about 120 bytes of the response or the connection error details. No fix is listed.

Written 3 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
2.7	Low	3.1	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0023, the 14th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

29 Jul 2026, 16:24 UTC Confirmed by GitHub Advisory Database
31 Oct 2026, 14:24 UTC First seen by agentprime
31 Oct 2026, 14:24 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.