TI-2022-06072 Aliases CVE-2022-21696 GHSA-68vr-8f46-vc9f

Username spoofing in OnionShare

LOW 21CWE-20Published 2022-01-18 · Updated 2025-04-23

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: Low · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00714 53rd percentileScored 2026-11-07

Fix Fixed onionshare (onionshare): 2.5onionshare-cli (PyPI): 2.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
onionshare	onionshare	before 2.5	2.5	Patch available	CNA
—	onionshare-cli (PyPI)	2.3 to before 2.5	2.5	Patch available	GHSA-68vr-8f46-vc9f

onionshare Vendoronionshare Affected before 2.5 Fixed in 2.5 Patch available CNA
onionshare-cli (PyPI) Vendor— Affected 2.3 to before 2.5 Fixed in 2.5 Patch available GHSA-68vr-8f46-vc9f

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:onionshare:onionshare::::::::	before 2.5	Vulnerable	onionshare

cpe:2.3:a:onionshare:onionshare:*:*:*:*:*:*:*:* Versions before 2.5 Vulnerable ·onionshare

Remediation

Fix · CNA onionshare (onionshare) Fixed in 2.5
Fix · GHSA-68vr-8f46-vc9f onionshare-cli (PyPI) Fixed in 2.5 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-21696
2026-10-03 Alias added: GHSA-68vr-8f46-vc9f

References

Advisory 3

Other 2

TI-2022-06066 Cross-Site Scripting in Onionshare CVSS 3.1HIGH 8.7
TI-2022-06068 Improper Access Control in Onionshare CVSS 3.1MEDIUM 4.3
TI-2021-18479 OnionShare 2.3 before 2.4 allows remote unauthenticated attackers to upload files on a… CVSS 3.1CRITICAL 9.8
TI-2022-06065 Denial of Service in Onionshare CVSS 3.1HIGH 7.5
TI-2022-06064 Out-of-bounds Read in Onionshare CVSS 3.1HIGH 7.5
TI-2022-06069 Path traversal in Onionshare CVSS 3.1MEDIUM 6.5

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences