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CVE-2022-21690

20
FAUCET Score

CVE-2022-21690 is a medium-severity cross-site scripting (XSS) vulnerability affecting OnionShare, an open-source tool for secure file sharing and communication over Tor. The flaw allows an attacker to inject HTML4 content into the OnionShare frontend by manipulating the path parameter of a requested URL, which is not properly sanitized before being displayed in the server access history. This could lead to limited impact on confidentiality and integrity, as indicated by its CVSS score of 5.4. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

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

8.7HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.79%
Probability of exploitation in next 30 days
EPSS Percentile
52.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0079 is in the 87th percentile among its peer group of 15,224 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 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-ch22-x2v3-v6vqmedium

OTF-001: Improper Input Sanitation: The path parameter of the requested URL is not sanitized before being passed to the QT frontend

Jan 21, 2022

References

github.com / onionshare/onionshare/releases/tag/v2.5
Release NotesThird Party Advisory
github.com / onionshare/onionshare/security/advisories/GHSA-ch22-x2v3-v6vq
ExploitThird Party Advisory