CVE-2025-66557 (GCVE-0-2025-66557)
Vulnerability from cvelistv5
Published
2025-12-05 17:28
Modified
2025-12-05 17:28
CWE
  • CWE-284 - Improper Access Control
Summary
Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with "Can share" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2.
Impacted products
Vendor Product Version
nextcloud security-advisories Version: >= 1.15.0-beta.1, < 1.15.2
Version: < 1.14.6
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "security-advisories",
          "vendor": "nextcloud",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 1.15.0-beta.1, \u003c 1.15.2"
            },
            {
              "status": "affected",
              "version": "\u003c 1.14.6"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with \"Can share\" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-284",
              "description": "CWE-284: Improper Access Control",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-05T17:28:48.642Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv"
        },
        {
          "name": "https://github.com/nextcloud/deck/pull/7131",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/deck/pull/7131"
        },
        {
          "name": "https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae"
        },
        {
          "name": "https://hackerone.com/reports/3247499",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/reports/3247499"
        }
      ],
      "source": {
        "advisory": "GHSA-wwr8-hx9g-rjvv",
        "discovery": "UNKNOWN"
      },
      "title": "Nextcloud Deck app allowed user with \"Can share\" permission to modify permissions of other non-owners"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-66557",
    "datePublished": "2025-12-05T17:28:48.642Z",
    "dateReserved": "2025-12-04T16:01:32.473Z",
    "dateUpdated": "2025-12-05T17:28:48.642Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-66557\",\"sourceIdentifier\":\"security-advisories@github.com\",\"published\":\"2025-12-05T18:15:58.977\",\"lastModified\":\"2025-12-05T18:15:58.977\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Nextcloud Deck is a kanban style organization tool aimed at personal planning and project organization for teams integrated with Nextcloud. Prior to 1.14.6 and 1.15.2, a bug in the permission logic allowed users with \\\"Can share\\\" permission to modify the permissions of other recipients. This vulnerability is fixed in 1.14.6 and 1.15.2.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L\",\"baseScore\":5.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":2.5}]},\"weaknesses\":[{\"source\":\"security-advisories@github.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-284\"}]}],\"references\":[{\"url\":\"https://github.com/nextcloud/deck/commit/f1da8b30a455f02373d44154da04494c949a95ae\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextcloud/deck/pull/7131\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://github.com/nextcloud/security-advisories/security/advisories/GHSA-wwr8-hx9g-rjvv\",\"source\":\"security-advisories@github.com\"},{\"url\":\"https://hackerone.com/reports/3247499\",\"source\":\"security-advisories@github.com\"}]}}"
  }
}


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