CERTFR-2026-AVI-1283
Vulnerability from certfr_avis - Published: 2026-10-09 - Updated: 2026-10-09
De multiples vulnérabilités ont été découvertes dans les produits Nextcloud. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, un déni de service à distance et une atteinte à la confidentialité des données.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Nextcloud | N/A | Team Folders versions 21.x antérieures à 21.0.8 | ||
| Nextcloud | Server | Server versions 33.0.x antérieures à 33.0.6 | ||
| Nextcloud | Server | Server versions 34.0.x antérieures à 34.0.1 | ||
| Nextcloud | N/A | Team Folders versions 20.x et antérieures à 20.1.15 | ||
| Nextcloud | N/A | Collectives versions antérieures à 4.4.1 | ||
| Nextcloud | N/A | Team Folders versions 14.x antérieures à 14.0.12 | ||
| Nextcloud | N/A | Team Folders versions 15.x et antérieures à 15.3.13 | ||
| Nextcloud | N/A | Team Folders versions antérieures à 13.1.8 | ||
| Nextcloud | N/A | Team Folders versions 18.x et antérieures à 18.1.14 | ||
| Nextcloud | N/A | Team Folders versions 16.x antérieures à 16.0.16 | ||
| Nextcloud | N/A | Team Folders versions 19.x antérieures à 19.1.19 | ||
| Nextcloud | N/A | Team Folders versions 17.x antérieures à 17.0.16 | ||
| Nextcloud | N/A | Team Folders versions 22.x antérieures à 22.0.1 | ||
| Nextcloud | Server | Server versions 32.0.x antérieures à 32.0.12 pour nextcloud | ||
| Nextcloud | N/A | files_lock versions 33.0.x antérieures à 33.0.6 |
References
| Title | Publication Time | Tags | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Team Folders versions 21.x ant\u00e9rieures \u00e0 21.0.8",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.6",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 34.0.x ant\u00e9rieures \u00e0 34.0.1",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 20.x et ant\u00e9rieures \u00e0 20.1.15",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Collectives versions ant\u00e9rieures \u00e0 4.4.1",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 14.x ant\u00e9rieures \u00e0 14.0.12",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 15.x et ant\u00e9rieures \u00e0 15.3.13",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions ant\u00e9rieures \u00e0 13.1.8",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 18.x et ant\u00e9rieures \u00e0 18.1.14",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 16.x ant\u00e9rieures \u00e0 16.0.16",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 19.x ant\u00e9rieures \u00e0 19.1.19",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 17.x ant\u00e9rieures \u00e0 17.0.16",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Team Folders versions 22.x ant\u00e9rieures \u00e0 22.0.1",
"product": {
"name": "N/A",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.12 pour nextcloud",
"product": {
"name": "Server",
"vendor": {
"name": "Nextcloud",
"scada": false
}
}
},
{
"description": "files_lock versions 33.0.x ant\u00e9rieures \u00e0 33.0.6",
"product": {
"name": "N/A",
"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": [
{
"name": "CVE-2026-82985",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-82985"
},
{
"name": "CVE-2026-68493",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-68493"
},
{
"name": "CVE-2026-77169",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77169"
},
{
"name": "CVE-2026-77165",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77165"
},
{
"name": "CVE-2026-77166",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-77166"
}
],
"initial_release_date": "2026-10-09T00:00:00",
"last_revision_date": "2026-10-09T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-1283",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-10-09T00:00:00.000000"
}
],
"risks": [
{
"description": "D\u00e9ni de service \u00e0 distance"
},
{
"description": "Contournement de la politique de s\u00e9curit\u00e9"
},
{
"description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
},
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans les produits Nextcloud. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, un d\u00e9ni de service \u00e0 distance et une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Nextcloud",
"vendor_advisories": [
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-f99w-3pm7-v4cv",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-f99w-3pm7-v4cv"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-4vpp-fp9q-9g23",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4vpp-fp9q-9g23"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-5gv7-hw69-w6px",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5gv7-hw69-w6px"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-9mjh-89xm-hcqw",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9mjh-89xm-hcqw"
},
{
"published_at": "2026-10-08",
"title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-22w9-gpgv-pcgc",
"url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-22w9-gpgv-pcgc"
}
]
}
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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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