What is CVE-2023-48833?

CVE-2023-48833 is a high-severity vulnerability in Phpjabbers Time Slots Booking Calendar, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-12-07.

How severe is CVE-2023-48833?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Phpjabbers Time Slots Booking Calendar

CVE-2023-48833

A lack of rate limiting in pjActionAJaxSend in Time Slots Booking Calendar 4.0 allows attackers to cause resource exhaustion.

Vulnerability class: DoS (Denial of Service)

Published 2023-12-07 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (62.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Phpjabbers Time Slots Booking Calendar — versions 4.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.phpjabbers.com/time-slots-booking-calendar/ (Product)
packetstormsecurity.com/files/176042 (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2023-48833?: CVE-2023-48833 is a high-severity vulnerability in Phpjabbers Time Slots Booking Calendar, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2023-12-07.
How severe is CVE-2023-48833?: High severity. CVSS v3 base score is 7.5 out of 10.