Vulnerability in Moodle
CVE-2025-67857
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
- Moodle — versions 5.1.0
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2025-67857 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory)
- moodle.org/mod/forum/discuss.php (Vendor Advisory)
Frequently asked questions
- What is CVE-2025-67857?
- CVE-2025-67857 is a medium-severity vulnerability in Moodle, classified under Insertion of Sensitive Information into Sent Data. CVSS score: 4.3/10. Published 2026-02-03.
- How severe is CVE-2025-67857?
- Medium severity. CVSS v3 base score is 4.3 out of 10.