CVE-2024-4288

EUVD-2024-32838

16.05.2024, 11:15

The Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘link’ parameter in versions up to, and including, 1.6.7.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Cross-site Scripting

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	6.4 MEDIUM	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Wordfence	CNA	6.4 MEDIUM				CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Base Score

CVSS 3.x

EPSS Score

Percentile: 50%

Affected Products (NVD)

Vendor	Product	Version
n_squared	appointment_booking_calendar	𝑥 ≤ 1.6.7.14
nsquared	simply_schedule_appointments	𝑥 < 1.6.7.18

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References

https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/class-shortcodes.php#L677

https://plugins.trac.wordpress.org/changeset/3087297/

https://www.wordfence.com/threat-intel/vulnerabilities/id/84262b4a-a662-4aaf-9eae-f5cca8f6cd06?source=cve

https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/class-shortcodes.php#L677

https://plugins.trac.wordpress.org/changeset/3087297/

https://www.wordfence.com/threat-intel/vulnerabilities/id/84262b4a-a662-4aaf-9eae-f5cca8f6cd06?source=cve