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Vulnerability record · CVE-2023-54357 · published 19 June 2026

CVE-2023-54357: Artio book it\! observable discrepancy vulnerability

Artio · Book It\!

Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.php with option=com_booking, controller=customer, task=getUserData, and an id parameter to retrieve user names, usernames, and email addresses through brute force enumeration.

8.7 CVSS 4.0 High EPSS 0.66% · top 50.5% CWE-203 · Observable discrepancy
8.7CVSS 4.0 base score
0.66%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
21 Aug 2026Last modified by NVD

Description

Joomla com_booking component 2.4.9 contains an information disclosure vulnerability that allows unauthenticated attackers to enumerate user accounts by exploiting the getUserData function in the customer controller. Attackers can send GET requests to index.php with option=com_booking, controller=customer, task=getUserData, and an id parameter to retrieve user names, usernames, and email addresses through brute force enumeration.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

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

References

LinkTags
http://www.artio.net/ Product
http://www.artio.net/downloads/joomla/book-it/book-it-2-free/download Product
https://www.exploit-db.com/exploits/51595 ExploitVDB Entry
https://www.vulncheck.com/advisories/joomla-com-booking-information-disclosure-via-account-enumeration Third Party Advisory

Track CVE-2023-54357 inside VULONE

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Related vulnerabilities

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

5.3CVE-2024-39891Twilio Authy API phone number enumeration via observable discrepancyAn unauthenticated endpoint in the Twilio Authy API, reachable through Authy Android before 25.1.0 and Authy iOS before 26.1.0, accepted streams of p…KEVEPSS 1.7%analysed

Source: NIST National Vulnerability Database (record CVE-2023-54357), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.