PatchTheCVECVE-2022-21689: OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat
CVE-2022-21689 is a high-severity flaw (CVSS 7.5) affecting onionshare. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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
Why this priority
- High severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.3% (top 29%) |
| CISA exploited list | No |
| Weakness | CWE-400 |
| Published | 2022-01-18 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2022-21689?
onionshare: upgrade to 2.5. Exact commands for each OS are on this page.
Is CVE-2022-21689 being exploited?
CVE-2022-21689 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2022-21689 affect?
CVE-2022-21689 affects onionshare. Severity is high (CVSS 7.5). 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 o
How urgent is CVE-2022-21689?
Priority 49/100. High severity; Remotely exploitable, no login, no user action
Related CVEs
- CVE-2022-21696 MEDIUM 4.3 UPGRADE OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat
- CVE-2022-21695 MEDIUM 4.3 UPGRADE OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat
- CVE-2022-21694 LOW 3.7 UPGRADE OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat
- CVE-2022-21693 MEDIUM 6.3 UPGRADE OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat
- CVE-2022-21692 MEDIUM 4.3 UPGRADE OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat