Critical

LocalSend is Vulnerable to Man-in-the-Middle Attacks, Leading to File Interception

Type: advisorySources: OSV

LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software's discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0.

Products: Not specified
Affected versions: Not specified
Fixed versions: Not specified
CVEs: CVE-2025-54792
Confirmed fixed CVEs: Not specified
Updated in this feed: 3 Nov 2026, 18:30 UTC · Revision 1

Source evidence

LocalSend is Vulnerable to Man-in-the-Middle Attacks, Leading to File Interception

core-osv · Original source

Published 1 Aug 2025, 23:04 UTC

osv:CVE-2025-54792

Complete source record

{
  "id": "cea4996d623df9b2eaf51d17627b8fd05588673eaa6d8a41dc8ea5e0cd6532d3",
  "url": "https://osv.dev/vulnerability/CVE-2025-54792",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "LocalSend is Vulnerable to Man-in-the-Middle Attacks, Leading to File Interception",
    "summary": "LocalSend is an open-source app to securely share files and messages with nearby devices over local networks without needing an internet connection. In versions 1.16.1 and below, a critical Man-in-the-Middle (MitM) vulnerability in the software's discovery protocol allows an unauthenticated attacker on the same local network to impersonate legitimate devices, silently intercepting, reading, and modifying any file transfer. This can be used to steal sensitive data or inject malware, like ransomware, into files shared between trusted users. The attack is hardly detectable and easy to implement, posing a severe and immediate security risk. This issue was fixed in version 1.17.0.",
    "evidence": "osv:CVE-2025-54792",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2025-54792",
      "aliases": [
        "CVE-2025-54792",
        "GHSA-424h-5f6m-x63f"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/localsend/localsend",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "7f21d1f9082a43803e05c37f021912e012145aa5"
                },
                {
                  "fixed": "e8635204ec782ded45bc7d698deb60f3c4105687"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:localsend:localsend:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.17.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e8635204ec782ded45bc7d698deb60f3c4105687"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7f21d1f9082a43803e05c37f021912e012145aa5"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.17.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.16.1",
            "v1.16.0",
            "v1.15.4",
            "v1.15.3",
            "v1.15.2",
            "v1.15.1",
            "v1.15.0",
            "v1.14.0",
            "v1.13.1",
            "v1.13.0-fdroid",
            "v1.13.0",
            "v1.12.0",
            "v1.11.1",
            "v1.11.0",
            "v1.10.0",
            "v1.9.1",
            "v1.9.0",
            "v1.8.0",
            "v1.6.2",
            "v1.6.1",
            "v1.5.2",
            "v1.5.0",
            "v1.3.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-54792.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.710417609Z",
      "provider": "osv",
      "references": [
        "https://github.com/localsend/localsend/releases/tag/v1.17.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54792.json",
        "https://github.com/localsend/localsend/security/advisories/GHSA-424h-5f6m-x63f",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-54792",
        "https://github.com/localsend/localsend/commit/e8635204ec782ded45bc7d698deb60f3c4105687"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-300",
          "CWE-345"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/54xxx/CVE-2025-54792.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-54792",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498470,
  "published_at": "2025-08-01T23:04:29.207+00:00"
}