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CVE-2023-34477CriticalCVE published 7 August 2023Added to mySites.guru 7 August 2023

BrainCert Virtual Classroom (com_virtualclassroom) 1.25.0 and below - Unauthenticated SQL Injection (Full Database Disclosure)

The BrainCert Online Virtual Classroom component, versions 1.0.0 through 1.25.0, contains an SQL injection flaw reachable without authentication. An anonymous visitor can execute arbitrary SQL against the site database, giving full read access to every table including the Joomla user table and its password hashes. CVSS 9.8 (Critical). BrainCert now ship version 2.0, which is outside the affected range, so update to 2.0 or later.

Is my site affected?

Affected
BrainCert Virtual Classroom up to and including 1.25.0
Fixed in
Update to 2.0 or later
What to do
Update BrainCert Virtual Classroom to 2.0 or later.
Check whether your sites are affected

How severe CVE-2023-34477 is

The published CVE record has no CVSS score, so there is no vector to break down here. mySites.guru rates it Critical, and that is the rating your sites are checked against.

Timeline

  1. 7 August 2023CVE-2023-34477 record published by its CNA
  2. 7 August 2023mySites.guru check added for BrainCert Virtual Classroom (up to and including 1.25.0)

Rule details

Other vulnerabilities in BrainCert Virtual Classroom

Updating for CVE-2023-34477 alone can leave a site on a release another rule still matches. These are the other flaws we check for in the same extension.

BrainCert Virtual Classroom

Latest safe version: 2.0

References

CVE-2023-34477 questions

Which versions are affected by CVE-2023-34477?
CVE-2023-34477 affects BrainCert Virtual Classroom up to and including 1.25.0.
How do I fix CVE-2023-34477?
Update BrainCert Virtual Classroom to 2.0 or later. Then confirm the installed version on the Joomla administrator's Extensions: Manage screen.
How severe is CVE-2023-34477?
The published CVE record has no CVSS score. mySites.guru rates it Critical.

Running an affected version on a site you manage?

A free audit tells you which of your Joomla and WordPress sites run an affected version, which are out of date, and which have not been backed up. No card required. If a site is already compromised, fix.mysites.guru is a single fixed fee per incident, usually resolved the same day.

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 5 October 2026.