Auth bypass in Phpjabbers Time Slots Booking Calendar

CVE-2023-33563

In PHP Jabbers Time Slots Booking Calendar 3.3 , lack of verification when changing an email address and/or password (on the Profile Page) allows remote attackers to take over accounts.

Vulnerability class: Broken Authentication

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (53.7th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-33563: held from 0.008 to 0.008.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2023-33563?
CVE-2023-33563 is a high-severity vulnerability in Phpjabbers Time Slots Booking Calendar, classified under Improper Authentication. CVSS score: 8.8/10. Published 2023-08-01.
How severe is CVE-2023-33563?
High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2023-33563 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.