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CVE-2022-21691

18
FAUCET Score

CVE-2022-21691 affects OnionShare, an open-source tool for secure file sharing and anonymous communication over Tor. This vulnerability allows chat participants to spoof "leave" messages, misleading others into believing they have exited a chatroom. Rated as MEDIUM severity (CVSS 4.3), it requires low privileges and network access, with a low impact on integrity (I:L) and no impact on confidentiality or availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.5CPE matchmatch criteria
cpe:2.3:a:onionshare:onionshare:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.67%
Probability of exploitation in next 30 days
EPSS Percentile
48.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0067 is in the 59th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: onionshare-cliFixed in: 2.5

Vendor Advisories (1)

pipGHSA-w9m4-7w72-r766medium

Improper Access Control in Onionshare

Jan 21, 2022

References

github.com / onionshare/onionshare/releases/tag/v2.5
Release NotesThird Party Advisory
github.com / onionshare/onionshare/security/advisories/GHSA-w9m4-7w72-r766
Third Party Advisory