CVE-2022-21696

Name: CVE-2022-21696
Creator: NVD / NIST
Published: 2022-01-18T20:15:07.9+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2022-21696 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. 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 it is possible to change the username to that of another chat participant with an additional space character at the end of the name string. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

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 it is possible to change the username to that of another chat participant with an additional space character at the end of the name string. An adversary with access to the chat environment can use the rename feature to impersonate other participants by adding whitespace characters at the end of the username.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.71%

48.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Onionshare	Onionshare	< 2.5

References

https://github.com/onionshare/onionshare/releases/tag/v2.5Release Notes, Third Party Advisory
https://github.com/onionshare/onionshare/security/advisories/GHSA-68vr-8f46-vc9fThird Party Advisory
https://github.com/onionshare/onionshare/releases/tag/v2.5Release Notes, Third Party Advisory
https://github.com/onionshare/onionshare/security/advisories/GHSA-68vr-8f46-vc9fThird Party Advisory

Timeline

Published: Jan 18, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-21696?

How severe is CVE-2022-21696?

CVE-2022-21696 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2022-21696?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-21696?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST