Moodle Exposure of Sensitive Information to an Unauthorized Actor

published 2018-07-10 8 y ago modified 2026-06-17 4 mo ago also GHSA-5w4h-xrr5-7273 , EUVD-2022-2663

cvss: 4.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.1%; EPSS 2.1% chance of exploitation in 30 days, percentile 81%
public exploits: 0; none known

A flaw was found in moodle before versions 3.5.1, 3.4.4, 3.3.7, 3.1.13. It was possible for the core_course_get_categories web service to return hidden categories, which should be omitted when fetching course categories.

Patch / fix

fixed in 2 links 1

packagist moodle/moodle 3.1.13, 3.3.7, 3.4.4, 3.5.1
moodle moodle 3.1.13, 3.3.7, 3.4.4, 3.5.1

moodle.org/mod/forum/discuss.php?d=373370 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-10890 updated 2025-11-21 cvss 4.3

moodle: Web service core_course_get_categories may return invisible categories

Red Hat All currently supported Red Hat products
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	4.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:P/I:N/A:N
GitHub	3.0	5.3	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	moodle/moodle	>=3.1, <3.1.13 >=3.3, <3.3.7 >=3.4, <3.4.4 >=3.5, <3.5.1	3.1.13 3.3.7 3.4.4 3.5.1

Affected products

[UNKNOWN] moodle

Classification

Weakness

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

moodle.org /mod/forum/discuss.php?d=373370
web, patch, vendor-advisory
bugzilla.redhat.com /show_bug.cgi?id=CVE-2018-10890
web, issue-tracking, third-party-advisory
securityfocus.com /bid/104738
vdb-entry, web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2018-10890
advisory
github.com /moodle/moodle
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary