What is CVE-2019-10133?

CVE-2019-10133 is a low-severity vulnerability in Moodle, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 3.1/10. Published 2019-06-26.

How severe is CVE-2019-10133?

Low severity. CVSS v3 base score is 3.1 out of 10.

Is CVE-2019-10133 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Moodle

CVE-2019-10133

A flaw was found in Moodle before 3.7, 3.6.4, 3.5.6, 3.4.9 and 3.1.18. The form to upload cohorts contained a redirect field, which was not restricted to internal URLs.

Vulnerability class: Open Redirect

Published 2019-06-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.009 (58.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 58.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Moodle — versions 3.7, 3.6.4, 3.5.6, 3.4.9 and 3.1.18

Weakness classification (CWE)

CWE-601 — URL Redirection to Untrusted Site (Open Redirect)

Public proof-of-concept exploits

jev770/badmoodle-scan

References

bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
moodle.org/mod/forum/discuss.php (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2019-10133?: CVE-2019-10133 is a low-severity vulnerability in Moodle, classified under URL Redirection to Untrusted Site (Open Redirect). CVSS score: 3.1/10. Published 2019-06-26.
How severe is CVE-2019-10133?: Low severity. CVSS v3 base score is 3.1 out of 10.
Is CVE-2019-10133 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.