CVE-2026-123655 | BDVDB-2026-401266 Detail

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.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact none, availability impact none. Attack vector: network.

Weaknesses#

CWE-862 Missing Authorization

References#

Exploit#

No public exploit known

History#

Version 12026-11-06Record published in the CVE List.

Published

Published: 2026-11-06
Last modified: 2026-11-06

Vendor information

Vendor: Not stated
Product: Not stated

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 50.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Missing Authorization

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 4.5.0 and < 4.5.15
Fixed
4.5.15
Vulnerable
>= 5.0.0 and < 5.0.11
Fixed
5.0.11
Vulnerable
>= 5.1.0 and < 5.1.8
Fixed
5.1.8
Vulnerable
>= 5.2.0 and < 5.2.4
Fixed
5.2.4

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	None
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).