CERTFR-2026-AVI-1198
Vulnerability from certfr_avis - Published: 2026-09-17 - Updated: 2026-09-17
Une vulnérabilité a été découverte dans Nextcloud Server. Elle permet à un attaquant de provoquer une exécution de code arbitraire à distance.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Nextcloud | Server | Server versions 33.0.x antérieures à 33.0.7 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 30.0.x antérieures à 30.0.17.12 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 23.0.x antérieures à 23.0.12.38 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 28.0.x antérieures à 28.0.14.20 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 24.0.x antérieures à 24.0.13.37 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 31.0.x antérieures à 31.0.14.8 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 25.0.x antérieures à 25.0.13.32 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 32.0.x antérieures à 32.0.13 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 29.0.x antérieures à 29.0.16.19 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 22.x antérieures à 22.2.10.42 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 27.x et antérieures à 27.1.11.29 pour nextcloud enterprise | ||
| Nextcloud | Server | Server versions 34.0.x antérieures à 34.0.2 pour nextcloud et nextcloud enterprise | ||
| Nextcloud | Server | Server versions 26.0.x antérieures à 26.0.13.29 pour nextcloud enterprise |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.7 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 30.0.x ant\u00e9rieures \u00e0 30.0.17.12 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 23.0.x ant\u00e9rieures \u00e0 23.0.12.38 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 28.0.x ant\u00e9rieures \u00e0 28.0.14.20 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 24.0.x ant\u00e9rieures \u00e0 24.0.13.37 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 31.0.x ant\u00e9rieures \u00e0 31.0.14.8 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 25.0.x ant\u00e9rieures \u00e0 25.0.13.32 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.13 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 29.0.x ant\u00e9rieures \u00e0 29.0.16.19 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 22.x ant\u00e9rieures \u00e0 22.2.10.42 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 27.x et ant\u00e9rieures \u00e0 27.1.11.29 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.2 pour nextcloud et nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 26.0.x ant\u00e9rieures \u00e0 26.0.13.29 pour nextcloud enterprise",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [],
"initial_release_date": "2026-09-17T00:00:00",
"last_revision_date": "2026-09-17T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1198",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-09-17T00:00:00.000000"
}
],
"risks": [
{
"description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans Nextcloud Server. Elle permet \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance.",
"title": "Vuln\u00e9rabilit\u00e9 dans Nextcloud Server",
"vendor_advisories": [
{
"published_at": "2026-09-17",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-7hwf-8pcj-33h4",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-7hwf-8pcj-33h4"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
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.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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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.
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