Observable Response Discrepancy Affecting moodle/moodle package, versions >=5.0.0-beta, <5.0.3


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.03% (7th percentile)

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  • Snyk IDSNYK-PHP-MOODLEMOODLE-13704136
  • published24 Oct 2025
  • disclosed23 Oct 2025
  • creditAdam Jenkins

Introduced: 23 Oct 2025

NewCVE-2025-62397  (opens in a new tab)
CWE-204  (opens in a new tab)

How to fix?

Upgrade moodle/moodle to version 5.0.3 or higher.

Overview

moodle/moodle is a learning platform.

Affected versions of this package are vulnerable to Observable Response Discrepancy in the router. An attacker can determine the existence of specific course IDs by analyzing the different responses returned for valid and invalid IDs.

CVSS Base Scores

version 4.0
version 3.1