CVE-2022-4035

HIGH 7.2

Appointment Hour Booking <= 1.3.72 - Unauthenticated iFrame Injection via Appointment Form

CVSS Score

7.2

EPSS Score

0.0%

EPSS Percentile

0th

The Appointment Hour Booking plugin for WordPress is vulnerable to iFrame Injection via the ‘email’ or general field parameters in versions up to, and including, 1.3.72 due to insufficient input sanitization and output escaping that makes injecting iFrame tags possible. This makes it possible for unauthenticated attackers to inject iFrames when submitting a booking that will execute whenever a user accesses the injected booking details page.

CWE	CWE-79
Vendor	codepeople
Product	appointment hour booking – booking calendar
Published	Nov 29, 2022
Last Updated	Apr 8, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

codepeople / Appointment Hour Booking – Booking Calendar

0 ≤ 1.3.72

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/870ae326-a7c9-4201-bf0d-0fbda663a694?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2803896%40appointment-hour-booking&new=2803896%40appointment-hour-booking&sfp_email=&sfph_mail= wordfence.com: https://www.wordfence.com/vulnerability-advisories-continued/#CVE-2022-4035

Credits

Luca Greeb Andreas Krüger