Nextcloud Server has a potential hash collision for background jobs could skip queuing them

{
  "id": "0f8f9e3afd417286b59d962e1eade6db577fdb43793158472cd614615413adf2",
  "url": "https://osv.dev/vulnerability/CVE-2024-52521",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Nextcloud Server has a potential hash collision for background jobs could skip queuing them",
    "summary": "Nextcloud Server is a self hosted personal cloud system. MD5 hashes were used to check background jobs for their uniqueness. This increased the chances of a background job with arguments falsely being identified as already existing and not be queued for execution. By changing the Hash to SHA256 the probability was heavily decreased. It is recommended that the Nextcloud Server is upgraded to 28.0.10, 29.0.7 or 30.0.0.",
    "evidence": "osv:CVE-2024-52521",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2024-52521",
      "aliases": [
        "CVE-2024-52521",
        "GHSA-2q6f-gjgj-7hp4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/nextcloud/server",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e15fcecaf0d382cebff924ec2b1f5319e130c0e8"
                },
                {
                  "fixed": "7f825c0cc17279e8f89d3d39f9cdb7bc45979583"
                },
                {
                  "introduced": "36ae775aa7c9af22bf33645a2d8807206ec6c85f"
                },
                {
                  "fixed": "873a4d0e1db10a5ae0e50133c7ef39e00750015b"
                },
                {
                  "fixed": "a933ba1fdba77e7d8c6b8ff400e082cf853ea46d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "28.0.0"
                      },
                      {
                        "fixed": "28.0.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "28.0.0"
                      },
                      {
                        "fixed": "28.0.10"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:-:*:*:*",
                    "range": [
                      {
                        "introduced": "29.0.0"
                      },
                      {
                        "fixed": "29.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:nextcloud:nextcloud_server:*:*:*:*:enterprise:*:*:*",
                    "range": [
                      {
                        "introduced": "29.0.0"
                      },
                      {
                        "fixed": "29.0.7"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a933ba1fdba77e7d8c6b8ff400e082cf853ea46d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v28.0.10rc1",
            "v29.0.7rc1",
            "v29.0.6",
            "v29.0.6rc1",
            "v29.0.5",
            "v28.0.9",
            "v28.0.9rc1",
            "v29.0.5rc1",
            "v28.0.8",
            "v29.0.4",
            "v28.0.8rc1",
            "v29.0.4rc1",
            "v28.0.7",
            "v29.0.3",
            "v28.0.7rc4",
            "v29.0.3rc4",
            "v28.0.7rc3",
            "v29.0.3rc3",
            "v28.0.7rc2",
            "v29.0.3rc2",
            "v29.0.3rc1",
            "v28.0.7rc1",
            "v29.0.2",
            "v29.0.2rc2",
            "v29.0.2rc1",
            "v28.0.6",
            "v29.0.1",
            "v28.0.6rc1",
            "v29.0.1rc1",
            "v28.0.5",
            "v29.0.0",
            "v28.0.5rc1",
            "v28.0.4",
            "v28.0.4rc1",
            "v28.0.3",
            "v28.0.3rc2",
            "v28.0.3rc1",
            "v28.0.2",
            "v28.0.2rc5",
            "v28.0.2rc4",
            "v28.0.2rc3",
            "v28.0.2rc2",
            "v28.0.2rc1",
            "v28.0.1",
            "v28.0.1rc1",
            "v28.0.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-52521.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.156285566Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/52xxx/CVE-2024-52521.json",
        "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2q6f-gjgj-7hp4",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-52521",
        "https://github.com/nextcloud/server/commit/a933ba1fdba77e7d8c6b8ff400e082cf853ea46d",
        "https://github.com/nextcloud/server/pull/47769"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-328"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/52xxx/CVE-2024-52521.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-52521",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514080,
  "published_at": "2024-11-15T16:38:49.174+00:00"
}