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CVE-2026-52838

LOW Exploitation: PoC
2.6
CVSS 3.1
Description
Easy!Appointments is a self hosted appointment scheduler. Versions prior to 1.6.0 allow administrators to define a custom "booking disabled" message through the booking settings page. That value is stored in the `disable_booking_message` setting via a rich-text editor and later passed directly to the public `booking_message` view without escaping or sanitization. An authenticated administrator can store HTML or JavaScript in this field, enable disabled-booking mode, and trigger stored XSS in every unauthenticated visitor who opens the public booking page. Version 1.6.0 fixes the issue.

Metadata

CVE ID
CVE-2026-52838
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-08 18:41 UTC
Published
2026-07-14 15:07 UTC
Last updated
2026-07-14 16:26 UTC
Primary CWE
CWE-79
CWE-79: Improper Neutralization of Input During Web Page Gen…
Vendor / Product
alextselegidis / easyappointments
Sources
cve.org  ·  NVD

Severity & Metrics

2.6 LOW CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:N
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
alextselegidis easyappointments — < 1.6.0
Weakness (CWE)
CWESourceDescription
CWE-79 cna CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS scores (1)
ScoreSeverityVersionSourceVector
2.6 LOW 3.1 cna CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:N/I:L/A:N
References (2)
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