CVE-2026-30662 in Concrete CMS

要約 (英語)

ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager component. The 'download' method in 'concrete/controllers/backend/file.php' improperly manages memory when creating zip archives. It uses 'ZipArchive::addFromString' combined with 'file_get_contents', which loads the entire content of every selected file into PHP memory. An authenticated attacker can exploit this by requesting a bulk download of large files, triggering an Out-Of-Memory (OOM) condition that causes the PHP-FPM process to terminate (SIGSEGV) and the web server to return a 500 error.

責任者

MITRE

予約する

2026年03月04日

公開

2026年03月24日

エントリ

VulDB provides additional information and datapoints for this CVE:

識別子	脆弱性	CWE	悪用可	対策	CVE
352780	Concrete CMS File Manager file.php download サービス拒否	404	未定義	未定義	CVE-2026-30662