CERTFR-2026-AVI-0569

Vulnerability from certfr_avis - Published: 2026-05-12 - Updated: 2026-05-12

De multiples vulnérabilités ont été découvertes dans les produits Nextcloud. Certaines d'entre elles permettent à un attaquant de provoquer une atteinte à la confidentialité des données, une atteinte à l'intégrité des données et un contournement de la politique de sécurité.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products
Vendor Product Description
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 31.0.x antérieures à 31.0.14.5
Nextcloud N/A Collectives app versions antérieures à 4.3.0
Nextcloud N/A User OIDC versions postérieures ou égales à 0.3.0 et antérieures à 8.4.0
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 27.0.x antérieures à 27.1.11.5
Nextcloud Calendar Calendar versions postérieures ou égales à 5.5.13 et antérieures à 5.5.17
Nextcloud N/A End-to-End Encryption versions 1.17.x antérieures à 1.17.1
Nextcloud Server Nextcloud Server versions 33.0.x antérieures à 33.0.3
Nextcloud N/A End-to-End Encryption versions 1.15.x antérieures à 1.15.4
Nextcloud N/A Android Files versions 33.x antérieures à 33.1.0
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 30.0.x antérieures à 30.0.17.9
Nextcloud Server Nextcloud Server versions 32.0.x antérieures à 32.0.9
Nextcloud N/A End-to-End Encryption versions 1.16.x antérieures à 1.16.3
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 29.0.x antérieures à 29.0.16.16
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 26.0.x antérieures à 26.0.13.26
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 28.0.x antérieures à 28.0.14.17
Nextcloud Calendar Calendar versions 6.2.x antérieures à 6.2.3
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 33.0.x antérieures à 33.0.3
Nextcloud Enterprise Server Nextcloud Enterprise Server versions 32.0.x antérieures à 32.0.9
Nextcloud N/A End-to-End Encryption versions 1.18.x antérieures à 1.18.1
References

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{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Nextcloud Enterprise Server versions 31.0.x ant\u00e9rieures \u00e0 31.0.14.5",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Collectives app versions ant\u00e9rieures \u00e0 4.3.0",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "User OIDC versions post\u00e9rieures ou \u00e9gales \u00e0 0.3.0 et ant\u00e9rieures \u00e0 8.4.0",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 27.0.x ant\u00e9rieures \u00e0 27.1.11.5",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Calendar versions post\u00e9rieures ou \u00e9gales \u00e0 5.5.13 et ant\u00e9rieures \u00e0 5.5.17",
      "product": {
        "name": "Calendar",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "End-to-End Encryption versions 1.17.x ant\u00e9rieures \u00e0 1.17.1",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.3 ",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "End-to-End Encryption versions 1.15.x ant\u00e9rieures \u00e0 1.15.4 ",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Android Files versions 33.x ant\u00e9rieures \u00e0 33.1.0 ",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 30.0.x ant\u00e9rieures \u00e0 30.0.17.9",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.9 ",
      "product": {
        "name": "Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "End-to-End Encryption versions 1.16.x ant\u00e9rieures \u00e0 1.16.3",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 29.0.x ant\u00e9rieures \u00e0 29.0.16.16",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 26.0.x ant\u00e9rieures \u00e0 26.0.13.26",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 28.0.x ant\u00e9rieures \u00e0 28.0.14.17",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Calendar versions 6.2.x ant\u00e9rieures \u00e0 6.2.3",
      "product": {
        "name": "Calendar",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 33.0.x ant\u00e9rieures \u00e0 33.0.3",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "Nextcloud Enterprise Server versions 32.0.x ant\u00e9rieures \u00e0 32.0.9 ",
      "product": {
        "name": "Enterprise Server",
        "vendor": {
          "name": "Nextcloud",
          "scada": false
        }
      }
    },
    {
      "description": "End-to-End Encryption versions 1.18.x ant\u00e9rieures \u00e0 1.18.1",
      "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-2026-45282",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45282"
    },
    {
      "name": "CVE-2026-45157",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45157"
    },
    {
      "name": "CVE-2026-45154",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45154"
    },
    {
      "name": "CVE-2026-45284",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45284"
    },
    {
      "name": "CVE-2026-45286",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45286"
    },
    {
      "name": "CVE-2026-45159",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45159"
    },
    {
      "name": "CVE-2026-45285",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45285"
    },
    {
      "name": "CVE-2026-45155",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45155"
    },
    {
      "name": "CVE-2026-45156",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45156"
    },
    {
      "name": "CVE-2026-45153",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-45153"
    }
  ],
  "initial_release_date": "2026-05-12T00:00:00",
  "last_revision_date": "2026-05-12T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0569",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-05-12T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    }
  ],
  "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 atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es, une atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es et un contournement de la politique de s\u00e9curit\u00e9.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans les produits Nextcloud",
  "vendor_advisories": [
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-2w7v-5299-3hw5",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2w7v-5299-3hw5"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-r3xh-x86g-hw4m",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r3xh-x86g-hw4m"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-xpgv-grf9-gm7x",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xpgv-grf9-gm7x"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-r697-74m9-gvf2",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r697-74m9-gvf2"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-p3qw-7gwx-wg24",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-p3qw-7gwx-wg24"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-qqgv-fqwp-mjpp",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-qqgv-fqwp-mjpp"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-79xf-ffj8-96fm",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-79xf-ffj8-96fm"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-35fx-69q6-xpjr",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-35fx-69q6-xpjr"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-45pj-p7x7-4mhc",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-45pj-p7x7-4mhc"
    },
    {
      "published_at": "2026-05-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Nextcloud GHSA-8mpv-ggq8-hf3w",
      "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8mpv-ggq8-hf3w"
    }
  ]
}


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Sightings

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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.



Detection rules are retrieved from Rulezet.