{"id":"GHSA-c442-3278-rhrg","aliases":["CVE-2021-36440"],"title":"Unrestricted File Upload in ShowDoc v2.9.5","titleSource":"OSV","descriptionSource":"OSV","declaredSeverity":"CRITICAL","description":"Unrestricted File Upload in ShowDoc v2.9.5 allows remote attackers to execute arbitrary code via the 'file_url' parameter in the component AdminUpdateController.class.php'.","severity":"critical","score":9.8,"published":"2021-09-09T17:08:46.000Z","modified":"2023-11-08T04:06:14.456Z","withdrawn":false,"knownExploited":false,"affected":[{"ecosystem":"Packagist","name":"showdoc/showdoc","sources":[{"name":"OSV · GHSA-c442-3278-rhrg","url":"https://osv.dev/vulnerability/GHSA-c442-3278-rhrg"}],"ranges":[{"events":[{"introduced":"0"},{"fixed":"2.9.6"}],"type":"ECOSYSTEM"}],"versions":["v1.0.0","v1.0.1","v1.0.2","v1.0.3","v1.0.4","v1.0.5","v1.1.0","v1.1.1","v1.1.3","v1.1.4","v1.1.5","v1.2.0","v1.2.1","v1.2.2","v1.2.3","v1.2.4","v1.2.5","v1.2.6","v1.3.0","v1.3.1","v1.3.3","v1.3.4","v1.3.5","v1.3.6","v1.3.7","v1.3.8","v1.4.0","v1.4.1","v1.4.2","v1.4.3","v1.4.4","v1.4.5","v1.4.6","v1.4.7","v1.5.0","v1.5.1","v1.5.2","v1.5.3","v1.6.0","v1.6.1","v1.6.2","v1.7.0","v1.7.1","v1.7.2","v1.8.0","v1.8.1","v1.8.2","v1.8.3","v1.8.4","v1.8.5","v1.8.6","v2.0","v2.0.1","v2.0.10","v2.0.2","v2.0.3","v2.0.4","v2.0.5","v2.0.6","v2.0.7","v2.0.8","v2.0.9","v2.1.0","v2.1.1","v2.1.2","v2.1.3","v2.1.4","v2.1.5","v2.2.0","v2.2.1","v2.3.0","v2.3.1","v2.3.3","v2.4.0","v2.4.1","v2.4.10","v2.4.11","v2.4.12","v2.4.13","v2.4.15","v2.4.16","v2.4.17","v2.4.2","v2.4.3","v2.4.5","v2.4.6","v2.4.7","v2.4.8","v2.4.9","v2.5.1","v2.5.2","v2.5.3","v2.5.5","v2.6.1","v2.6.2","v2.6.3","v2.6.5","v2.6.6","v2.6.7","v2.7.0","v2.7.1","v2.8.0","v2.8.1","v2.8.10","v2.8.11","v2.8.12","v2.8.13","v2.8.14","v2.8.15","v2.8.16","v2.8.2","v2.8.3","v2.8.5","v2.8.6","v2.8.7","v2.8.8","v2.8.9","v2.9.0","v2.9.1","v2.9.2","v2.9.3","v2.9.4","v2.9.5"],"fixed":["2.9.6"]}],"sourceAffected":[],"references":["https://nvd.nist.gov/vuln/detail/CVE-2021-36440","https://github.com/star7th/showdoc/issues/1406","https://github.com/star7th/showdoc/commit/49b992d4c548c8c615a92b6efe8a50c8f1083abf","https://github.com/star7th/showdoc"],"sources":[{"name":"OSV","id":"GHSA-c442-3278-rhrg","modified":"2023-11-08T04:06:14.456803Z","url":"https://osv.dev/vulnerability/GHSA-c442-3278-rhrg"}],"assessments":[{"source":"OSV","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8}],"products":[],"remediation":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T21:25:31.856Z"},"coverage":[{"source":"NVD","status":"not-checked"},{"source":"GHSA","status":"not-checked"},{"source":"EUVD","status":"not-checked"},{"source":"EPSS","status":"not-checked"}],"evidence":[]}