onionshare — security advisory
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
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"
}