CVE-2026-30662

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Source
https://cve.org/CVERecord?id=CVE-2026-30662
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30662.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-30662
Aliases
Published
2026-03-24T00:00:00Z
Modified
2026-07-15T01:49:06.468616607Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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 'filegetcontents', 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.

Database specific 
{
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30662.json"
}
References

Affected packages

Git / github.com/concretecms/concretecms

Affected ranges

Type
GIT
Repo
https://github.com/concretecms/concretecms
Events
Introduced
f2a9fc77537f412c3e5a30e46924c07987020dd7
Last affected
f2a9fc77537f412c3e5a30e46924c07987020dd7
Database specific 
{
    "source": "CPE_STRING",
    "extracted_events": [
        {
            "introduced": "9.4.7"
        },
        {
            "last_affected": "9.4.7"
        }
    ],
    "cpe": "cpe:2.3:a:concretecms:concrete_cms:9.4.7:*:*:*:*:*:*:*"
}

Affected versions

9.*
9.4.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30662.json"