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Security advisory

Type: advisorySources: OSVCVE: CVE-2021-32750

MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker could send a message with a subject line containing a URL with an HTML image tag and the MuWire client would try to fetch that image via clearnet, thus exposing the IP address of the user. The problem is fixed in MuWire 0.8.8. As a workaround, users can disable messaging functionality to prevent other users from sending them malicious messages.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2021-32750
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 11:47 UTC · Revision 1

Source evidence

CVE-2021-32750

core-osv · Original source

Published 15 Jul 2021, 17:15 UTC

MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker could send a message with a subject line containing a URL with an HTML image tag and the MuWire client would try to fetch that image via clearnet, thus exposing the IP address of the user. The problem is fixed in MuWire 0.8.8. As a workaround, users can disable messaging functionality to prevent other users from sending them malicious messages.

osv:CVE-2021-32750
Complete source record
{
  "id": "3e73795140088f3ab8c51dc80d9b9bf733ef4821b62cae8c26c3c7ba497874c5",
  "url": "https://osv.dev/vulnerability/CVE-2021-32750",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-32750",
    "summary": "MuWire is a file publishing and networking tool that protects the identity of its users by using I2P technology. Users of MuWire desktop client prior to version 0.8.8 can be de-anonymized by an attacker who knows their full ID. An attacker could send a message with a subject line containing a URL with an HTML image tag and the MuWire client would try to fetch that image via clearnet, thus exposing the IP address of the user. The problem is fixed in MuWire 0.8.8. As a workaround, users can disable messaging functionality to prevent other users from sending them malicious messages.",
    "evidence": "osv:CVE-2021-32750",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-32750",
      "aliases": [
        "CVE-2021-32750",
        "GHSA-68xh-9h7w-64qg"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zlatinb/muwire",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5f229d903f09e12f6bbae31b8aab3440e58ec730"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:muwire_project:muwire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.8.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "muwire-0.8.7",
            "muwire-0.8.6",
            "muwire-0.8.5",
            "muwire-0.8.4",
            "muwire-0.8.3",
            "muwire-0.8.2",
            "muwire-0.8.1",
            "muwire-0.8.0",
            "muwire-0.7.7",
            "muwire-0.7.6",
            "muwire-0.7.5",
            "muwire-0.7.4",
            "muwire-0.7.3",
            "muwire-0.7.2",
            "muwire-0.7.1",
            "muwire-0.7.0",
            "muwire-0.6.15",
            "muwire-0.6.14",
            "muwire-0.6.13",
            "muwire-0.6.12",
            "muwire-0.6.11",
            "muwire-0.6.10",
            "muwire-0.6.9",
            "docker-0.6.8.2",
            "docker-0.6.8.1",
            "docker-0.6.8",
            "plugin-mvp",
            "muwire-0.6.8",
            "muwire-0.6.7",
            "muwire-0.6.6",
            "muwire-0.6.5",
            "muwire-0.6.4",
            "muwire-0.6.3",
            "muwire-0.6.2",
            "muwire-0.6.1",
            "muwire-0.6.0",
            "muwire-0.5.10",
            "muwire-0.5.9",
            "muwire-0.5.8",
            "muwire-0.5.7",
            "muwire-0.5.6",
            "muwire-0.5.5",
            "muwire-0.5.4",
            "muwire-0.5.3",
            "muwire-0.5.2",
            "muwire-0.5.1",
            "muwire-0.5.0",
            "muwire-0.4.16",
            "muwire-0.4.15",
            "muwire-0.4.14",
            "muwire-0.4.13",
            "muwire-0.4.12",
            "muwire-0.4.11",
            "muwire-0.4.10",
            "muwire-0.4.9",
            "muwire-0.4.8",
            "test-signed-tag",
            "muwire-0.4.7",
            "muwire-0.4.6",
            "muwire-0.4.5",
            "muwire-0.4.4",
            "muwire-0.4.3",
            "muwire-0.4.2",
            "muwire-0.4.1",
            "muwire-0.4.0",
            "muwire-0.3.10",
            "muwire-0.3.9",
            "muwire-0.3.8",
            "muwire-0.3.7",
            "muwire-0.3.6",
            "muwire-0.3.5",
            "muwire-0.3.4",
            "muwire-0.3.3",
            "muwire-0.3.2",
            "muwire-0.3.1",
            "muwire-0.3.0",
            "muwire-0.2.10",
            "muwire-0.2.9",
            "muwire-0.2.8",
            "muwire-0.2.7",
            "muwire-0.2.6",
            "muwire-0.2.5",
            "muwire-0.2.4",
            "muwire-0.2.3",
            "muwire-0.2.2",
            "muwire-0.2.1",
            "muwire-0.2.0",
            "muwire-0.1.13",
            "muwire-0.1.12",
            "muwire-0.1.11",
            "muwire-0.1.10",
            "muwire-0.1.9",
            "muwire-0.1.8",
            "muwire-0.1.7",
            "muwire-0.1.6",
            "muwire-0.1.5",
            "muwire-0.1.4",
            "muwire-0.1.3",
            "muwire-0.1.2",
            "muwire-0.1.1-1",
            "muwire-0.1.1",
            "muwire-0.1.0",
            "muwire-0.0.14",
            "muwire-0.0.13",
            "muwire-0.0.12",
            "muwire-0.0.11",
            "muwire-0.0.10",
            "muwire-0.0.9",
            "muwire-0.0.8",
            "muwire-0.0.7",
            "muwire-0.0.6",
            "muwire-0.0.5",
            "muwire-0.0.4",
            "muwire-0.0.3",
            "muwire-0.0.2",
            "muwire-0.0.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-32750.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:43.262149762Z",
      "provider": "osv",
      "references": [
        "https://github.com/zlatinb/muwire/security/advisories/GHSA-68xh-9h7w-64qg"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-32750",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385993,
  "published_at": "2021-07-15T17:15:08.527+00:00"
}