Medium severity · published May 16, 2024
CVE-2024-4288
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin <= 1.6.7.14 - Authenticated (Contributor+) Stored Cross-Site Scripting
5.4
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AB
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin · croixhaug
through 1.6.7.14 · source: vendor
SS
Simply Schedule Appointments · Nsquared
before 1.6.7.18 · source: NVD
AB
Appointment Booking Calendar · N Squared
through 1.6.7.14 · source: CISA
Affected product
AB
Appointment Booking Calendar — Simply Schedule Appointments Booking Plugin
croixhaug
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4288
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4288
Product
https://plugins.trac.wordpress.org/browser/simply-schedule-appointments/trunk/includes/class-shortcodes.php#L677
Patch
https://plugins.trac.wordpress.org/changeset/3087297/
Third Party Advisory
https://www.wordfence.com/threat-intel/vulnerabilities/id/84262b4a-a662-4aaf-9eae-f5cca8f6cd06?source=cve
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