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Vulnerability record · CVE-2023-5543 · published 9 November 2023

CVE-2023-5543: Moodle improper access control vulnerability

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.

3.3 CVSS 3.1 Low EPSS 0.24% · top 86.0% CWE-284 · Improper access control
3.3CVSS 3.1 base score
0.24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected products

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

References

LinkTags
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77795 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2243442 Issue TrackingPatchThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=451584 PatchVendor Advisory
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77795 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2243442 Issue TrackingPatchThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=451584 PatchVendor Advisory

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

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Source: NIST National Vulnerability Database (record CVE-2023-5543), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.