CVE-2022-21689

CVE-2022-21689 affects OnionShare, an open-source tool for secure file sharing over Tor, specifically impacting its receive mode. The vulnerability allows an attacker to block file uploads for other users by exceeding a 100-per-second upload limit, which can be triggered with a simple script. Rated 7.5 HIGH on CVSS, this denial-of-service vulnerability has a network attack vector, low attack complexity, and high impact on availability, with no confidentiality or integrity impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.