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CVE-2018-16854

28
FAUCET Score

CVE-2018-16854 describes a Cross-Site Request Forgery (CSRF) vulnerability in the login form of Moodle versions 3.1 through 3.5.2 and earlier, allowing attackers to potentially force users to log in to an attacker-controlled account. This vulnerability carries a high CVSS score of 8.8, indicating a critical risk due to its network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion, suggesting it is not widely targeted. Organizations using affected Moodle versions should upgrade to fixed versions (3.6, 3.5.3, 3.4.6, 3.3.9, or 3.1.15) to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.10CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.1.0, < 3.1.15CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.3.0, < 3.3.9CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.4.0, < 3.4.6CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
>= 3.5.0, < 3.5.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
2.5
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.21%
Probability of exploitation in next 30 days
EPSS Percentile
80.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0221 is in the 80th percentile among its peer group of 14,875 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.1.15
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.3.9
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.4.6
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.5.3
redhatpatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-xj5f-qv37-r9jchigh

Moodle Login CSRF vulnerability in login form

May 13, 2022

References

git.moodle.org / gw
PatchVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
moodle.org / mod/forum/discuss.php
Vendor Advisory
securityfocus.com / bid/106017
Third Party AdvisoryVDB Entry
securitytracker.com / id/1042154
Third Party AdvisoryVDB Entry