{"id":"GHSA-g39c-mccf-rxjv","aliases":["BIT-moodle-2021-43560","CVE-2021-43560"],"title":"Moodle Insecure direct object reference (IDOR) in a calendar web service","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"MODERATE","description":"A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. Insufficient capability checks made it possible to fetch other users' calendar action events.","severity":"medium","score":5.3,"published":"2022-05-24T19:21:10.000Z","modified":"2024-04-23T23:58:39.771Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"moodle/moodle","sources":[{"name":"OSV · GHSA-g39c-mccf-rxjv","url":"https://osv.dev/vulnerability/GHSA-g39c-mccf-rxjv"}],"ranges":[{"events":[{"introduced":"3.9"},{"fixed":"3.9.11"}],"type":"ECOSYSTEM"}],"versions":["v3.9.0","v3.9.0-beta","v3.9.0-rc1","v3.9.0-rc2","v3.9.0-rc3","v3.9.1","v3.9.10","v3.9.2","v3.9.3","v3.9.4","v3.9.5","v3.9.6","v3.9.7","v3.9.8","v3.9.9"],"fixed":["3.9.11"]},{"ecosystem":"Packagist","name":"moodle/moodle","sources":[{"name":"OSV · GHSA-g39c-mccf-rxjv","url":"https://osv.dev/vulnerability/GHSA-g39c-mccf-rxjv"}],"ranges":[{"events":[{"introduced":"3.10"},{"fixed":"3.10.8"}],"type":"ECOSYSTEM"}],"versions":["v3.10.0","v3.10.0-beta","v3.10.0-rc1","v3.10.0-rc2","v3.10.1","v3.10.2","v3.10.3","v3.10.4","v3.10.5","v3.10.6","v3.10.7"],"fixed":["3.10.8"]},{"ecosystem":"Packagist","name":"moodle/moodle","sources":[{"name":"OSV · GHSA-g39c-mccf-rxjv","url":"https://osv.dev/vulnerability/GHSA-g39c-mccf-rxjv"}],"ranges":[{"events":[{"introduced":"3.11"},{"fixed":"3.11.4"}],"type":"ECOSYSTEM"}],"versions":["v3.11.0","v3.11.0-beta","v3.11.0-rc1","v3.11.0-rc2","v3.11.1","v3.11.2","v3.11.3"],"fixed":["3.11.4"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2021-43560","https://bugzilla.redhat.com/show_bug.cgi?id=2021519","https://github.com/moodle/moodle","https://moodle.org/mod/forum/discuss.php?d=429100"],"sources":[{"name":"OSV","id":"GHSA-g39c-mccf-rxjv","modified":"2024-04-23T23:58:39.771620Z","url":"https://osv.dev/vulnerability/GHSA-g39c-mccf-rxjv"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T21:10:33.929Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}