CVE-2019-14829Network attack vector

Unauthorized activity creation via unchecked addinstance capability

Published Mar 19, 2021 · Updated Aug 5, 2024

Improper authorization in affected Moodle LMS releases allows remote authenticated users to create course activities without required permissions. The single-activity course format's course_format_options method exposed every supported activity type without checking its module-specific addinstance capability. Exploitation requires an account allowed to create a single-activity course, and the integrity impact is limited to adding an activity type that the assigned role cannot normally create.

CVSS severity4.3
Medium
EPSS probability0.74%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in affected Moodle LMS releases allows remote authenticated users to create course activities without required permissions. The single-activity course format's course_format_options method exposed every supported activity type without checking its module-specific addinstance capability. Exploitation requires an account allowed to create a single-activity course, and the integrity impact is limited to adding an activity type that the assigned role cannot normally create.

The record

CVE
CVE-2019-14829
Published
Mar 19, 2021
Updated
Aug 5, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-573
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 19, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.7 to 3.7.1, 3.6 to 3.6.5, 3.5 to 3.5.7 and earlier unsupported versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moodle · Moodle LMSversion=3.7 to 3.7.1, 3.6 to 3.6.5, 3.5 to 3.5.7 and earlier unsupported versions

Published CVSS scores

4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-573Improper Following of Specification by Caller

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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