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CVE-2016-2159

18
FAUCET Score

CVE-2016-2159 describes a bypass vulnerability in the save_submission function within Moodle versions through 2.6.11, 2.7.x before 2.7.13, 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3. This flaw allows authenticated students to submit assignments after the due date by manipulating web-service requests. Rated as Medium severity (CVSS 4.3), it requires low privileges and network access, potentially leading to a low impact on integrity by circumventing intended restrictions. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.6.11CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
2.7.0CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.0:*:*:*:*:*:*:*
2.7.1CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.1:*:*:*:*:*:*:*
2.7.2CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.2:*:*:*:*:*:*:*
2.7.3CPE matchmatch criteria
cpe:2.3:a:moodle:moodle:2.7.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.43%
Probability of exploitation in next 30 days
EPSS Percentile
70.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0143 is in the 84th percentile among its peer group of 21,957 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (4)

composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.7.13
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.8.11
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 2.9.5
composerpatch availablevia ghsa
Product: moodle/moodleFixed in: 3.0.3

Vendor Advisories (1)

composerGHSA-cw72-69wq-f9f2medium

Moodle External function mod_assign_save_submission does not check due dates

May 13, 2022

References

git.moodle.org / gw
moodle.org / mod/forum/discuss.php
Vendor Advisory
openwall.com / lists/oss-security/2016/03/21/1
securitytracker.com / id/1035333