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Vulnerability details: VCID-b16m-tyxv-gyht
Vulnerability ID VCID-b16m-tyxv-gyht
Aliases CVE-2024-33996
GHSA-4qww-rxq6-x7gf
Summary Moodle broken access control when setting calendar event type Incorrect validation of allowed event types in a calendar web service made it possible for some users to create events with types/audiences they did not have permission to publish to.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-20 Improper Input Validation
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 6.2 http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81247
generic_textual MODERATE http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81247
epss 0.00318 https://api.first.org/data/v1/epss?cve=CVE-2024-33996
epss 0.00318 https://api.first.org/data/v1/epss?cve=CVE-2024-33996
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-4qww-rxq6-x7gf
cvssv3.1 6.2 https://github.com/moodle/moodle
generic_textual MODERATE https://github.com/moodle/moodle
cvssv3.1 6.2 https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
generic_textual MODERATE https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
ssvc Track https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
cvssv3.1 6.2 https://nvd.nist.gov/vuln/detail/CVE-2024-33996
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2024-33996
Reference id Reference type URL
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81247
https://api.first.org/data/v1/epss?cve=CVE-2024-33996
https://github.com/moodle/moodle
https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
https://nvd.nist.gov/vuln/detail/CVE-2024-33996
GHSA-4qww-rxq6-x7gf https://github.com/advisories/GHSA-4qww-rxq6-x7gf
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N Found at http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-81247
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N Found at https://github.com/moodle/moodle
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N Found at https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2024-06-01T13:14:42Z/ Found at https://moodle.org/mod/forum/discuss.php?d=458384#p1840909
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2024-33996
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.5424
EPSS Score 0.00318
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:11:40.725708+00:00 GithubOSV Importer Import https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/05/GHSA-4qww-rxq6-x7gf/GHSA-4qww-rxq6-x7gf.json 36.1.3