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Vulnerability record · CVE-2023-5551 · published 9 November 2023

CVE-2023-5551: Moodle information exposure vulnerability

Moodle · Moodle

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

3.3 CVSS 3.1 Low EPSS 0.28% · top 81.7% CWE-200 · Information exposure
3.3CVSS 3.1 base score
0.28%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Separate Groups mode restrictions were not honoured in the forum summary report, which would display users from other groups.

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-79310 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2243453 Issue TrackingPatchThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=451592 PatchVendor Advisory
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-79310 Patch
https://bugzilla.redhat.com/show_bug.cgi?id=2243453 Issue TrackingPatchThird Party Advisory
https://moodle.org/mod/forum/discuss.php?d=451592 PatchVendor Advisory

Track CVE-2023-5551 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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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-2023-5551), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.