CVE-2026-30662 - Vulnerability Analysis
MediumCVSS: 6.5Last Updated: March 24, 2026
ConcreteCMS - Denial of Service
Published: March 24, 2026Updated: March 24, 2026PoC AvailableRemote Exploitable
Overview
ConcreteCMS v9.4.7 contains a denial of service caused by improper memory management in the File Manager's download method using ZipArchive::addFromString and file_get_contents, letting authenticated attackers trigger out-of-memory crashes via bulk large file downloads.
Severity & Score
Severity: Medium
CVSS Score: 6.5
Impact
Authenticated attackers can cause PHP-FPM crashes and server errors, resulting in denial of service.
Mitigation
Update to the latest version of ConcreteCMS where this issue is fixed.
Related Resources
Details
- CVE ID
- CVE-2026-30662
- Severity
- Medium
- CVSS Score
- 6.5
- Type
- denial_of_service
- Status
- modified
CWE
- CWE-400
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H