Nextcloud Desktop client behaves incorrectly if the initial end-to-end-encryption signature is empty

{
  "id": "bbb065ee2b96f8ad6d7038ff4cb5bc556562be58ce2e3735c93af2d0615aedbc",
  "url": "https://osv.dev/vulnerability/CVE-2024-52510",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nextcloud Desktop client behaves incorrectly if the initial end-to-end-encryption signature is empty",
    "summary": "The Nextcloud Desktop Client is a tool to synchronize files from Nextcloud Server with your computer. The Desktop client did not stop with an error but allowed by-passing the signature validation, if a manipulated server sends an empty initial signature. It is recommended that the Nextcloud Desktop client is upgraded to 3.14.2 or later.",
    "evidence": "osv:CVE-2024-52510",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2024-52510",
      "aliases": [
        "CVE-2024-52510",
        "GHSA-r4qc-m9mj-452v"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nextcloud/desktop",
              "type": "GIT",
              "events": [
                {
                  "introduced": "ff175088a391007b66bfca89ef35cf29e37cf001"
                },
                {
                  "fixed": "5b9cebb4aba3548101cace9080ea1f98d244d0b3"
                },
                {
                  "fixed": "97539218e6f63c3a3fd1694cb7d8aef27c5910d7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nextcloud:desktop:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0.0"
                      },
                      {
                        "fixed": "3.14.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "97539218e6f63c3a3fd1694cb7d8aef27c5910d7"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-52510.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.149482723Z",
      "provider": "osv",
      "references": [
        "https://hackerone.com/reports/2597504",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/52xxx/CVE-2024-52510.json",
        "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r4qc-m9mj-452v",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-52510",
        "https://github.com/nextcloud/desktop/commit/97539218e6f63c3a3fd1694cb7d8aef27c5910d7",
        "https://github.com/nextcloud/desktop/pull/7333"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-295"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/52xxx/CVE-2024-52510.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-52510",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514089,
  "published_at": "2024-11-15T17:29:44.84+00:00"
}