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Vulnerability record · CVE-2023-48840 · published 7 December 2023

CVE-2023-48840: Phpjabbers appointment scheduler uncontrolled resource consumption vulnerability

Phpjabbers · Appointment Scheduler

A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.

7.5 CVSS 3.1 High EPSS 1.1% · top 37.1% CWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A lack of rate limiting in pjActionAjaxSend in Appointment Scheduler 3.0 allows attackers to cause resource exhaustion.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/176056 ExploitThird Party AdvisoryVDB Entry
https://www.phpjabbers.com/appointment-scheduler/ Product
http://packetstormsecurity.com/files/176056 ExploitThird Party AdvisoryVDB Entry
https://www.phpjabbers.com/appointment-scheduler/ Product

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-48841Phpjabbers appointment scheduler injection vulnerabilityAppointment Scheduler 3.0 is vulnerable to CSV Injection via a Language > Labels > Export action.EPSS 1.2%7.5CVE-2023-36127Phpjabbers appointment scheduler observable discrepancy vulnerabilityUser enumeration is found in in PHPJabbers Appointment Scheduler 3.0. This issue occurs during password recovery, where a difference in messages coul…EPSS 0.59%6.8CVE-2014-10001Phpjabbers appointment scheduler cross-site request forgery vulnerabilityMultiple cross-site request forgery (CSRF) vulnerabilities in PHPJabbers Appointment Scheduler 2.0 allow remote attackers to hijack the authenticatio…EPSS 2.3%6.1CVE-2023-36126Phpjabbers appointment scheduler cross-site scripting vulnerabilityThere is a Cross Site Scripting (XSS) vulnerability in the "theme" parameter of preview.php in PHPJabbers Appointment Scheduler v3.0EPSS 0.38%5.4CVE-2023-48838Phpjabbers appointment scheduler cross-site scripting vulnerabilityAppointment Scheduler 3.0 is vulnerable to Multiple HTML Injection issues via the SMS API Key or Default Country Code.EPSS 0.46%5.4CVE-2023-48839Phpjabbers appointment scheduler cross-site scripting vulnerabilityAppointment Scheduler 3.0 is vulnerable to Multiple Stored Cross-Site Scripting (XSS) issues via the name, plugin_sms_api_key, plugin_sms_country_cod…EPSS 0.42%5.0CVE-2014-10010Phpjabbers appointment scheduler path traversal vulnerabilityDirectory traversal vulnerability in PHPJabbers Appointment Scheduler 2.0 allows remote attackers to read arbitrary files via a .. (dot dot) in the i…EPSS 7.7%7.5CVE-2026-28318SolarWinds Serv-U unauthenticated POST request denial of serviceSolarWinds Serv-U crashes when it receives a specially crafted POST request using Content-Encoding: deflate, and the crash occurs without authenticat…KEVEPSS 1.9%analysed

Source: NIST National Vulnerability Database (record CVE-2023-48840), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.