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onionshare — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2022-21689

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions the receive mode limits concurrent uploads to 100 per second and blocks other uploads in the same second, which can be triggered by a simple script. An adversary with access to the receive mode can block file upload for others. There is no way to block this attack in public mode due to the anonymity properties of the tor network.

Products
onionshare
Affected versions
Not specified
Fixed versions
2.5-1
CVEs
CVE-2022-21689
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 14:30 UTC · Revision 1

Source evidence

DEBIAN-CVE-2022-21689

core-osv · Original source

Published 18 Jan 2022, 22:15 UTC

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions the receive mode limits concurrent uploads to 100 per second and blocks other uploads in the same second, which can be triggered by a simple script. An adversary with access to the receive mode can block file upload for others. There is no way to block this attack in public mode due to the anonymity properties of the tor network.

osv:DEBIAN-CVE-2022-21689

onionshare

Fixed versions: 2.5-1

onionshare

Fixed versions: 2.5-1

onionshare

Fixed versions: 2.5-1

Complete source record
{
  "id": "c9dc9cc4531199ffc667fc5b9b3f9ce0fb977ab1d19246eea3e4921cec95818c",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2022-21689",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2022-21689",
    "summary": "OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. In affected versions the receive mode limits concurrent uploads to 100 per second and blocks other uploads in the same second, which can be triggered by a simple script. An adversary with access to the receive mode can block file upload for others. There is no way to block this attack in public mode due to the anonymity properties of the tor network.",
    "evidence": "osv:DEBIAN-CVE-2022-21689",
    "products": [
      {
        "name": {
          "value": "onionshare",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.5-1",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "onionshare",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.5-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "onionshare",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2.5-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2022-21689",
      "aliases": [
        "DEBIAN-CVE-2022-21689"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "onionshare",
            "purl": "pkg:deb/debian/onionshare?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-21689.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "onionshare",
            "purl": "pkg:deb/debian/onionshare?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-21689.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2.5-1"
                }
              ]
            }
          ],
          "package": {
            "name": "onionshare",
            "purl": "pkg:deb/debian/onionshare?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2022-21689.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-15T08:00:12.023682786Z",
      "provider": "osv",
      "upstream": [
        "CVE-2022-21689"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2022-21689"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2022-21689",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 322385,
  "published_at": "2022-01-18T22:15:07.987+00:00"
}