CVE-2025-67857

MEDIUM 4.3

Moodle: moodle: data exposure of user identifiers in urls

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

A flaw was found in moodle. During anonymous assignment submissions, user identifiers were inadvertently exposed in URLs. This data exposure allows unauthorized viewers to see internal user IDs, compromising the intended anonymity and potentially leading to information disclosure.

CWE	CWE-201
Published	Feb 3, 2026
Last Updated	Feb 3, 2026

Stay Ahead of the Next One

Get instant alerts for

Be the first to know when new medium vulnerabilities are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

References

NVD ↗ CVE.org ↗ EPSS Data ↗

access.redhat.com: https://access.redhat.com/security/cve/CVE-2025-67857 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2423868 moodle.org: https://moodle.org/mod/forum/discuss.php?d=471307

Credits

Red Hat would like to thank Mihail Geshoski for reporting this issue.