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CVE-2026-63047HighCVSS 7.5CVE published 22 July 2026Added to mySites.guru 20 July 2026

Events Booking (com_eventbooking) 5.x below 5.8.2 - Unauthenticated Invoice IDOR (billing data disclosure, fixed 5.8.2, CVE-2026-63047)

Events Booking for Joomla had an unauthenticated Insecure Direct Object Reference (IDOR) in the front-end invoice download. The access check only confirmed that a download code was present, not that it matched the requested registration, so an anonymous visitor could download any registrant's invoice (full name, organisation, postal address, email address and payment amount) by iterating the numeric id. Affects the current 5.x line only (5.0.0 up to and including 5.8.1); the legacy Joomla 3 line (4.9.x and below) does not have the vulnerable invoice-download code and is not affected. Fixed in 5.8.2. Note the fix was also silently backported into the 5.8.1 package before the 5.8.2 release, so a site reporting 5.8.1 cannot be assumed patched: update to 5.8.2 to be sure. Read-only disclosure (no write/RCE). Assigned CVE-2026-63047 via the Joomla CNA (published 22 July 2026, crediting Phil Taylor of mySites.guru). Discovered and disclosed by mySites.guru.

Is my site affected?

Affected
Events Booking from 5.0.0 up to but not including 5.8.2
Fixed in
5.8.2
What to do
Update Events Booking to 5.8.2 or later.
Check whether your sites are affected

How CVE-2026-63047 is scored

The base metrics as CISA-ADP 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.

7.5 High

CVSS 3.1, scored by CISA-ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A: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
PR:N Privileges required
None. No account needed
UI:N User interaction
None. Nobody has to be tricked into anything
S:U Scope
Unchanged. Contained to the extension it is in

What it does

C:H Confidentiality
High. Everything the site holds can be read
I:N Integrity
None. Nothing can be altered
A:N Availability
None. The site stays up

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

Timeline

  1. 20 July 2026mySites.guru check added for Events Booking (from 5.0.0 up to but not including 5.8.2)
  2. 21 July 2026We published: Events Booking for Joomla exposes personal and financial data from invoices
  3. 22 July 2026CVE-2026-63047 record published by its CNA

Rule details

Our disclosure post

Events Booking for Joomla exposes personal and financial data from invoices

Events Booking for Joomla exposes personal and financial data from invoices

An unauthenticated flaw in Events Booking for Joomla let anyone download any registrant's invoice, with their name, address, email and payment. Fixed in 5.8.2.

Other vulnerabilities in Events Booking

Updating for CVE-2026-63047 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

Events Booking

Latest safe version: 5.8.2

References

CVE-2026-63047 questions

Which versions are affected by CVE-2026-63047?
CVE-2026-63047 affects Events Booking from 5.0.0 up to but not including 5.8.2. The fix is in 5.8.2.
How do I fix CVE-2026-63047?
Update Events Booking to 5.8.2 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2026-63047?
CISA-ADP scores it 7.5 (High) under CVSS 3.1. In plain terms: reachable across the internet, no account needed and nobody has to be tricked into anything.

Running an affected version on a site you manage?

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This check is part of the mySites.guru Joomla vulnerability scanner, which reads every installed extension's version on each audit. Browse the rest of the Joomla vulnerability database.

Rules current as of 8 October 2026.