CVE-2023-48839

Name: CVE-2023-48839
Creator: NVD / NIST
Published: 2023-12-07T07:15:12.397+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.42%

Last modified Jun 17, 2026

CVE-2023-48839 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. Appointment Scheduler 3.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the name, plugin_sms_api_key, plugin_sms_country_code, calendar_id, title, country name, or customer_name parameter.. EPSS estimates a 0.42% chance of exploitation in the next 30 days.

Description

Appointment Scheduler 3.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the name, plugin_sms_api_key, plugin_sms_country_code, calendar_id, title, country name, or customer_name parameter.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.42%

33.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Phpjabbers	Appointment Scheduler	3.0

References

http://packetstormsecurity.com/files/176055Third Party Advisory, VDB Entry
https://www.phpjabbers.com/appointment-scheduler/Product
http://packetstormsecurity.com/files/176055Third Party Advisory, VDB Entry
https://www.phpjabbers.com/appointment-scheduler/Product

Timeline

Published: Dec 7, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-48839?

How severe is CVE-2023-48839?

CVE-2023-48839 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.

How do I fix CVE-2023-48839?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-48839?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST