High severityNVD Advisory· Published Jan 18, 2022· Updated Apr 23, 2025
Denial of Service in Onionshare
CVE-2022-21689
Description
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.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
onionshare-cliPyPI | < 2.5 | 2.5 |
Affected products
1- Range: < 2.5
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
5- github.com/advisories/GHSA-jh82-c5jw-pxpcghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2022-21689ghsaADVISORY
- github.com/onionshare/onionshare/releases/tag/v2.5ghsax_refsource_MISCWEB
- github.com/onionshare/onionshare/security/advisories/GHSA-jh82-c5jw-pxpcghsax_refsource_CONFIRMWEB
- github.com/pypa/advisory-database/tree/main/vulns/onionshare-cli/PYSEC-2022-40.yamlghsaWEB
News mentions
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