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Vulnerabilities

Vulnerability · CVE-2023-5543

When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity.

Published Nov 9, 2023 · catalog updated Jun 17, 2026 · When duplicating a BigBlueButton

Last checked Nov 7, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2023-5543. EPSS is 0.25%. Act only if a listed version of When duplicating a BigBlueButton is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (When duplicating a BigBlueButton).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Low3.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.25%
Remediation
Version ranges on file
Affected products
cpe fedoraproject/extra packages for enterprise linux · cpe fedoraproject/fedora · cpe moodle/moodle

When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity. This could provide unintended access to the original meeting.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe fedoraproject/extra packages for enterprise linux7.0
  • cpe fedoraproject/fedora38
  • cpe moodle/moodle< 4.0.11
  • cpe moodle/moodle< 4.1.6
  • cpe moodle/moodle< 4.2.3

How to fix CVE-2023-5543

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2023-5543. EPSS is 0.25%. Act only if a listed version of When duplicating a BigBlueButton is installed.

Which versions are affected?

Compare what you have installed with fedoraproject/extra packages for enterprise linux 7.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-284: Improper Access Control. EPSS 0.25%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

Moodle security

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 9, 2023 · Monitored products — high

    Detected

    When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity. This could provide unintended access to the original meeting.

  2. Jun 17, 2026 · Monitored products — high

    Updated

    When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity. This could provide unintended access to the original meeting.

Sources

  • CVE.orgVulnerability recordCVE-2023-5543

    Official CVE identifier

    cve.org
  • Monitored products — highVendor advisoryCVE-2023-5543

    When duplicating a BigBlueButton activity, the original meeting ID was also duplicated instead of using a new ID for the new activity. This could provide unintended access to the original meeting.

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 7, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 5, 2026
  • Monitored products — highNov 4, 2026