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Noroxi
NVD / CVE Program· CNA fedora

CVE-2024-38273: moodle: BigBlueButton web service leaks meeting joining information to users who should not have access

Noroxi assessment

Priority: Monitor (action score 21/100)

  • 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: 0.42% (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) 4.2.8, 4.3.5, 4.4.1.

Low priority for now. Upgrade to moodle/moodle (Packagist) 4.2.8, 4.3.5, 4.4.1 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

Insufficient capability checks meant it was possible for users to gain access to BigBlueButton join URLs they did not have permission to access.

MediumCVSS 5.4 · v3.1—No exploit Fix available
Published
Jun 18, 2024
Updated
Jun 17, 2026
EPSS
0.4% · 37th percentile

Report tools

JSON

Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

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.

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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
fedoraprojectfedora

Affected versions

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

  • fedoraproject fedora39
  • fedoraproject fedora40
  • moodle moodle4.1.0 and later · before 4.1.11
  • moodle moodle4.2.0 and later · before 4.2.8
  • moodle moodle4.3.0 and later · before 4.3.5
  • moodle moodle4.4.0

Versions reported by the vendor

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

  • Moodle Moodle

    • 4.4affected
    • 4.3 and later · up to and including 4.3.4affected · semver
    • 4.2 and later · up to and including 4.2.7affected · semver
    • 4.1 and later · up to and including 4.1.10affected · semver

Package-level exposure

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

EcosystemPackageAffected rangeFix
Packagistmoodle/moodlefrom 4.2.0-beta · before 4.2.84.2.8
Packagistmoodle/moodlefrom 4.3.0-beta · before 4.3.54.3.5
Packagistmoodle/moodlefrom 4.4.0-beta · before 4.4.14.4.1
Packagistmoodle/moodlebefore 4.1.114.1.11

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.
    49Plan

Published before and after this one in the same product

  • ← EarlierCVE-2024-34008May 31, 2024 · moodle: CSRF risk in analytics management of models
    35Monitor
  • ← EarlierCVE-2024-34009May 31, 2024 · moodle: ReCAPTCHA can be bypassed on the login page
    30Monitor
  • Later →CVE-2024-38274Jun 18, 2024 · moodle: stored XSS via calendar's event title when deleting the event
    24Monitor

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/moodle4.1.11Package registry (OSV)
Packagist:moodle/moodle4.2.8Package registry (OSV)
Packagist:moodle/moodle4.3.5Package registry (OSV)
Packagist:moodle/moodle4.4.1Package 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.

No history yet (it accumulates with the daily EPSS job).

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.

  • CVE-2023-23923487 days apartMoodle: possible to set the preferred "start page" of other users
    32Monitor
  • CVE-2024-25980120 days apartMsa-24-0003: h5p attempts report did not respect activity group settings
    21Monitor
  • CVE-2024-25981120 days apartMsa-24-0004: forum export did not respect activity group settings
    21Monitor
  • CVE-2023-5549222 days apartMoodle: insufficient capability checks when updating the parent of a course category
    21Monitor
  • CVE-2024-48899155 days apartMoodle: idor when accessing list of course badges
    17Monitor
  • CVE-2023-5542222 days apartMoodle: students can view other users in "only see own membership" groups
    17Monitor

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
low · data can be read
Integrity
none
Availability
low · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
Low

Weakness class (CWE)

CWE-284 · Improper Access Control

CVSS vector

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

nvd-secondary

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

Show all references (2 more)

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

All records