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

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

Published: 2024-06-18 Last update: 2025-08-07 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2024-38273 is rated Low Risk (36.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.20%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2024-38273

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-21 0.45% 0.20% -0.25%
2 2025-11-18 0.20% 0.45% +0.25%
3 2025-11-07 — 0.20% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2024-38273

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:L)
Might cause slowdowns, glitches, or partial disruption—not a full brick.
 2.8 2.5 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2024-38273

GitHub Security Advisory for CVE-2024-38273

GHSA-x29x-qwvx-fxr2 · Severity: medium · Ecosystem: composer — Moodle BigBlueButton web service leaks meeting joining information

OS Trackers for CVE-2024-38273

vendor priority summary link
ubuntu medium CVE-2024-38273 medium priority: Ubuntu including 1 source packages (moodle), 10 status rows across 10 suites (bionic, focal, jammy, mantic, noble, oracular, plucky, questing, upstream, xenial): DNE 7, needs-triage 2, released 1. https://ubuntu.com/security/CVE-2024-38273

Affected software / configurations for CVE-2024-38273

Vendor Product Version Raw CPE
moodle moodle >= 4.1.0, < 4.1.11 cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle >= 4.2.0, < 4.2.8 cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle >= 4.3.0, < 4.3.5 cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*
moodle moodle 4.4.0 cpe:2.3:a:moodle:moodle:4.4.0:*:*:*:*:*:*:*
fedoraproject fedora 39 cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
fedoraproject fedora 40 cpe:2.3:o:fedoraproject:fedora:40:*:*:*:*:*:*:*

References for CVE-2024-38273

cvelogic Threat Intelligence