FKIE_CVE-2026-30662
Vulnerability from fkie_nvd - Published: 2026-03-24 15:16 - Updated: 2026-06-17 10:326.5 (Medium) - CVSS:3.1/
| URL | Tags | ||
|---|---|---|---|
| cve@mitre.org | https://wang1rrr.github.io/2026/02/11/CVE-Report-ConcreteCMS-DoS/ | Exploit, Third Party Advisory |
| Vendor | Product | Version | |
|---|---|---|---|
| concretecms | concrete_cms | 9.4.7 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
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"nodes": [
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"criteria": "cpe:2.3:a:concretecms:concrete_cms:9.4.7:*:*:*:*:*:*:*",
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager component. The \u0027download\u0027 method in \u0027concrete/controllers/backend/file.php\u0027 improperly manages memory when creating zip archives. It uses \u0027ZipArchive::addFromString\u0027 combined with \u0027file_get_contents\u0027, 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."
},
{
"lang": "es",
"value": "ConcreteCMS v9.4.7 contiene una vulnerabilidad de denegaci\u00f3n de servicio (DoS) en el componente del Administrador de Archivos. El m\u00e9todo \u0027download\u0027 en \u0027concrete/controllers/backend/file.php\u0027 gestiona incorrectamente la memoria al crear archivos zip. Utiliza \u0027ZipArchive::addFromString\u0027 combinado con \u0027file_get_contents\u0027, lo que carga el contenido completo de cada archivo seleccionado en la memoria PHP. Un atacante autenticado puede explotar esto solicitando una descarga masiva de archivos grandes, lo que desencadena una condici\u00f3n de Out-Of-Memory (OOM) que provoca la terminaci\u00f3n del proceso PHP-FPM (SIGSEGV) y que el servidor web devuelva un error 500."
}
],
"id": "CVE-2026-30662",
"lastModified": "2026-06-17T10:32:52.257",
"metrics": {
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{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
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"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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"impactScore": 3.6,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
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"ssvcV203": [
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"role": "CISA Coordinator",
"timestamp": "2026-03-24T18:49:15.519526Z",
"version": "2.0.3"
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"published": "2026-03-24T15:16:34.457",
"references": [
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"tags": [
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"url": "https://wang1rrr.github.io/2026/02/11/CVE-Report-ConcreteCMS-DoS/"
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"type": "Secondary"
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]
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.