CVE-2025-3628Network attack vector

Student identity disclosure via blind-submission search

Published Apr 25, 2025 · Updated Apr 25, 2025

Information disclosure in Moodle LMS 4.5.0 through 4.5.3 allows remote authenticated users to reveal anonymous submitter identities. The mod_assign grading action menu resolves a selected user ID with fullname() before enforcing blind-detail visibility, exposing the name through search selection. An account with access to assignment grading search can correlate a blind submission with a student's real identity, without altering coursework or interrupting service.

CVSS severity4.3
Medium
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Moodle LMS 4.5.0 through 4.5.3 allows remote authenticated users to reveal anonymous submitter identities. The mod_assign grading action menu resolves a selected user ID with fullname() before enforcing blind-detail visibility, exposing the name through search selection. An account with access to assignment grading search can correlate a blind submission with a student's real identity, without altering coursework or interrupting service.

The record

CVE
CVE-2025-3628
Published
Apr 25, 2025
Updated
Apr 25, 2025
Vendor
Moodle
Product
Moodle LMS
Classifications
CWE-200, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 25, 2025Record 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=4.5.0 <4.5.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Moodle · Moodle LMSversion=4.5.0 <4.5.4

Published CVSS scores

4.3Fedora ProjectCVSS: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-200Exposure of Sensitive Information to an Unauthorized Actor
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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