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Security advisory

Type: advisorySources: OSVCVE: CVE-2025-46653

Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-46653
Confirmed fixed CVEs
Not specified
Updated in this feed
7 Nov 2026, 01:16 UTC · Revision 1

Source evidence

CVE-2025-46653

core-osv · Original source

Published 26 Apr 2025, 00:00 UTC

Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not "cryptographically secure." (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.

osv:CVE-2025-46653
Complete source record
{
  "id": "3c612343db98e6b0ce9e4f4d77d810cc93ca91e3a6df51758f7eddc15ba783f5",
  "url": "https://osv.dev/vulnerability/CVE-2025-46653",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2025-46653",
    "summary": "Formidable (aka node-formidable) 2.1.0 through 3.x before 3.5.3 relies on hexoid to prevent guessing of filenames for untrusted executable content; however, hexoid is documented as not \"cryptographically secure.\" (Also, there is a scenario in which only the last two characters of a hexoid string need to be guessed, but this is not often relevant.) NOTE: this does not imply that, in a typical use case, attackers will be able to exploit any hexoid behavior to upload and execute their own content.",
    "evidence": "osv:CVE-2025-46653",
    "products": [],
    "severity": "low",
    "structured": {
      "id": "CVE-2025-46653",
      "aliases": [
        "CVE-2025-46653",
        "GHSA-75v8-2h7p-7m2m"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/node-formidable/formidable",
              "type": "GIT",
              "events": [
                {
                  "introduced": "6da191c2eb926fbe5b146d67826ca9a8b8ddac0f"
                },
                {
                  "fixed": "0bf31f65877fa1dce4c163c0f3a0e588afbbe45b"
                },
                {
                  "fixed": "022c2c5577dfe14d2947f10909d81b03b6070bf5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:node-formidable:formidable:*:*:*:*:*:node.js:*:*",
                    "range": [
                      {
                        "introduced": "2.1.0"
                      },
                      {
                        "fixed": "3.5.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "022c2c5577dfe14d2947f10909d81b03b6070bf5"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-46653.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:48.851510398Z",
      "provider": "osv",
      "references": [
        "https://github.com/node-formidable/formidable/blob/d0fbec13edc8add54a1afb9ce1a8d3db803f8d47/CHANGELOG.md?plain=1#L10",
        "https://github.com/zast-ai/vulnerability-reports/blob/main/formidable/file_upload/report.md",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46653.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-46653",
        "https://github.com/node-formidable/formidable/commit/022c2c5577dfe14d2947f10909d81b03b6070bf5"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-338"
        ],
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46653.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-46653",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 516905,
  "published_at": "2025-04-26T00:00:00+00:00"
}