CVE-2026-123655

high

Description

A flaw was found in Moodle. Insufficient access control checks on H5P content files allow unauthenticated remote attackers to view restricted materials, including content stored in the system context and files belonging to hidden or unavailable course modules. This issue results in unauthorized information disclosure of protected content.

References

https://moodle.org/mod/forum/discuss.php?d=482830

https://github.com/moodle/moodle/commit/4b42ce4ed1d132214fd4b7d4b5f4f0387ec28a49

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-118220

https://bugzilla.redhat.com/show_bug.cgi?id=2568053

https://access.redhat.com/security/cve/CVE-2026-123655

Details

Source: Mitre, NVD

Published: 2026-11-06

Updated: 2026-11-06

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00623