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CVE-2023-54357HighCVSS 8.7CVE published 19 June 2026Added to mySites.guru 1 January 2023

Booking - Book It (com_booking) 2.4.9 - CVE-2023-54357 Unauthenticated Account Enumeration / Information Disclosure

The Booking (Book It) component 2.4.9 exposes a getUserData function in the customer controller that lets an unauthenticated attacker enumerate accounts and retrieve names, usernames and email addresses via crafted GET requests (CVE-2023-54357). Update to the latest version.

Is my site affected?

Affected
Booking - Book It up to and including 2.4.9
Fixed in
A release after 2.4.9
What to do
Update Booking - Book It to the newest release from the vendor. This flaw covers versions up to 2.4.9, so any later release is outside it.
Check whether your sites are affected

How CVE-2023-54357 is scored

The base metrics as VulnCheck CNA published them, and what each one means for a site running an affected version. Threat and environmental metrics are left out: they describe a moment or a particular install rather than the flaw.

8.7 High

CVSS 4.0, scored by VulnCheck CNA
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

How it is reached

AV:N Attack vector
Network. Reachable across the internet
AC:L Attack complexity
Low. Nothing to work around, it just works
AT:N Attack requirements
None. Works against any affected install
PR:N Privileges required
None. No account needed
UI:N User interaction
None. Nobody has to be tricked into anything

What it does to the site

VC:H Confidentiality
High. Everything the site holds can be read
VI:N Integrity
None. Nothing can be altered
VA:N Availability
None. The site stays up

What it does beyond the site

SC:N Confidentiality
None. Other systems keep their data
SI:N Integrity
None. Other systems keep their integrity
SA:N Availability
None. Other systems stay up

mySites.guru rates this Medium. Where our assessment and the published record differ, your sites are checked against ours.

Timeline

  1. 1 January 2023mySites.guru check added for Booking - Book It (up to and including 2.4.9)
  2. 19 June 2026CVE-2023-54357 record published by its CNA

Rule details

References

CVE-2023-54357 questions

Which versions are affected by CVE-2023-54357?
CVE-2023-54357 affects Booking - Book It up to and including 2.4.9.
How do I fix CVE-2023-54357?
Update Booking - Book It to the newest release from the vendor. This flaw covers versions up to 2.4.9, so any later release is outside it.
How severe is CVE-2023-54357?
VulnCheck CNA scores it 8.7 (High) under CVSS 4.0. In plain terms: reachable across the internet, no account needed and nobody has to be tricked into anything.

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Rules current as of 5 October 2026.