CVE-2021-32477Network attack vector

Authenticated activity disclosure via unchecked profile rendering

Published Mar 11, 2022 · Updated Aug 3, 2024

Missing authorization in Moodle LMS 3.10 through 3.10.3 allows remote authenticated users to read another user's mobile-app last-access time. The user profile page renders the stored mobile-app access timestamp without first enforcing the capability intended to restrict that field to site administrators by default. Any account able to open the affected profile can obtain this activity metadata, but the flaw does not expose message content or permit data changes.

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

Missing authorization in Moodle LMS 3.10 through 3.10.3 allows remote authenticated users to read another user's mobile-app last-access time. The user profile page renders the stored mobile-app access timestamp without first enforcing the capability intended to restrict that field to site administrators by default. Any account able to open the affected profile can obtain this activity metadata, but the flaw does not expose message content or permit data changes.

The record

CVE
CVE-2021-32477
Published
Mar 11, 2022
Updated
Aug 3, 2024
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-862, CWE-200
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=3.10 to 3.10.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moodle · Moodle LMSversion=3.10 to 3.10.3

Published CVSS scores

4.0NIST NVDAV:N/AC:L/Au:S/C:P/I:N/A:N
4.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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-862Missing Authorization
CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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