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CVE-2022-40208· NVD / CVE Program· CNA redhat

In Moodle, insufficient limitations in some quiz web services made it possible for students to bypass sequential navigation during a quiz at

Noroxi assessment

Priority: Monitor (action score 17/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.56% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: moodle/moodle (Packagist) 3.11.9, 4.0.3, 3.9.16.

Low priority for now. Upgrade to moodle/moodle (Packagist) 3.11.9, 4.0.3, 3.9.16 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

In Moodle, insufficient limitations in some quiz web services made it possible for students to bypass sequential navigation during a quiz attempt.

MediumCVSS 4.3 · v3.1—No exploit Fix available
Published
Mar 24, 2023
Updated
Jun 17, 2026
EPSS
0.5% · 46th percentile

Report tools

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Action score

17

Monitor

Low priority for now.

CVSS
17 / 40 · 4.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.5%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2022-40208

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
moodlemoodle

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • moodle moodleafter 3.9.0 · before 3.9.16
  • moodle moodleafter 3.11.0 · before 3.11.9
  • moodle moodleafter 4.0.0 · before 4.0.3
  • moodle moodle3.11.0
  • moodle moodle3.9.0
  • moodle moodle4.0.0

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a Moodle

    • affected 4.0 to 4.0.2, 3.11 to 3.11.8, 3.9 to 3.9.15 and earlier unsupported versionsaffected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Packagistmoodle/moodlefrom 3.11.0 · before 3.11.93.11.9
Packagistmoodle/moodlefrom 4.0.0 · before 4.0.34.0.3
Packagistmoodle/moodlebefore 3.9.163.9.16

Same product

moodle: all records

Other highest-scoring records for the same primary product.

  • CVE-2024-43425Moodle: remote code execution via calculated question types
    60This week
  • CVE-2021-36393In Moodle, an SQL injection risk was identified in the library fetching a user's recent courses.
    55Plan
  • CVE-2022-0332A flaw was found in Moodle in versions 3.11 to 3.11.4.
    52Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-28335Mar 23, 2023 · Moodle: csrf risk in resetting all templates of a database activity
    35Monitor
  • ← EarlierCVE-2023-28336Mar 23, 2023 · Moodle: teacher can access names of users they do not have permission to access
    17Monitor
  • Later →CVE-2023-30943May 2, 2023 · Moodle: tinymce loaders susceptible to arbitrary folder creation
    23Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Packagist:moodle/moodle3.11.9Package registry (OSV)
Packagist:moodle/moodle3.9.16Package registry (OSV)
Packagist:moodle/moodle4.0.3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
low · data or configuration can be modified
Availability
none
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
None
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-285 · Improper Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records