DescriptionOnionShare 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1014966

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
onionshare (PTS)buster1.3.2-1fixed
sid, trixie2.6-5fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
onionsharesourcebuster(not affected)


[buster] - onionshare <not-affected> (Vulnerable code not present) (v2.5)

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